{"title":"15%折扣","description":"","products":[{"product_id":"dual-analog-vu-meter-2-way-amplifier-speaker-audio-switcher-box-db-panel-display","title":"Douk Audio VU3 双模拟 VU 表 2 路功放\/扬声器音频切换盒 DB 面板显示屏","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\" data-mce-style=\"text-align: left;\"\u003e\n\n\u003cdiv class=\"celwidget aplus-module 3p-module-b aplus-standard\" data-csa-c-id=\"bj2s6z-xhzx0i-aazc1-bwqy08\" data-cel-widget=\"aplus-3p-module-b\" cel_widget_id=\"aplus-3p-module-b\"\u003e\n\n\u003cdiv class=\"aplus-module-wrapper aplus-3p-fixed-width\"\u003e\n\n\u003cdiv class=\"celwidget aplus-module 3p-module-b aplus-standard\" data-csa-c-id=\"bj2s6z-xhzx0i-aazc1-bwqy08\" data-cel-widget=\"aplus-3p-module-b\" cel_widget_id=\"aplus-3p-module-b\"\u003e\n\n\u003cdiv class=\"aplus-module-wrapper aplus-3p-fixed-width\"\u003e\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"celwidget aplus-module module-2 aplus-standard\" data-csa-c-id=\"61kubu-j99bqt-ah6rqi-9vukc9\" data-cel-widget=\"aplus-module-2\" cel_widget_id=\"aplus-module-2\"\u003e\n\n\u003cdiv data-a-expander-name=\"aplus-module-expander\" data-a-expander-collapsed-height=\"700\" class=\"a-expander-collapsed-height a-row a-expander-container a-expander-partial-collapse-container\"\u003e\n\n\u003cdiv aria-expanded=\"false\" class=\"a-expander-content a-expander-partial-collapse-content\"\u003e\n\n\u003cdiv class=\"aplus-module-wrapper apm-floatnone apm-fixed-width\"\u003e\n\n\u003cdiv class=\"apm-sidemodule apm-spacing\"\u003e\n\n\u003cdiv class=\"apm-sidemodule-textright\"\u003e\n\n\u003ch3 class=\"a-spacing-mini\"\u003e\u003c\/h3\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cstrong\u003e\u003cbr\u003e特征\u003c\/strong\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n \u003cli data-mce-fragment=\"1\"\u003eVU3 VU 表和音频切换器最初由 Douk Audio 设计： \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cblockquote data-mce-fragment=\"1\"\u003e\n\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\n\u003cdiv style=\"text-align: left;\" id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e作为VU表，具有双60*35mm大表盘，在切换音频信号时可以动态装饰音频环境并提供无与伦比的视觉效果。\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\n\u003cdiv style=\"text-align: left;\" id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e作为音频切换器，可轻松在两个放大器和两对扬声器之间切换，无需反复插拔电缆以避免磨损插座的接触点。\u003c\/span\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/blockquote\u003e\n\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e强大的设计，强大的兼容性：所有通道均采用全隔离设计，每个通道的GND独立，互不干扰。支持BTL\/A类\/B类\/D类数字功放\/电子管功放等各种功放。\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e高品质的组件确保VU3的最佳工作性能： \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cblockquote data-mce-fragment=\"1\"\u003e\n\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\n\u003cdiv style=\"text-align: left;\" id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e \u003cspan data-mce-fragment=\"1\"\u003e1.AC 250V 5A大电流继电器，轻松连接大功率的功放和扬声器。\u003c\/span\u003e\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n \u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e2、内置金属线绕制大功率负载电阻，每通道支持最大300W功率输入输出。\u003c\/span\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e \u003cspan data-mce-fragment=\"1\"\u003e3.高精度VU表，峰值LED显示，与定制VU驱动板完美匹配。\u003c\/span\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e \u003cspan data-mce-fragment=\"1\"\u003e4.采用全隔离变压器采集音频信号，避免VU驱动板的串扰，确保声音清晰纯净。\u003c\/span\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\n\u003cdiv style=\"text-align: left;\" id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e \u003cspan data-mce-fragment=\"1\"\u003e5.坚固的CNC全铝合金外壳，大型纯铜香蕉扬声器插孔确保传输过程中信号衰减最小。\u003c\/span\u003e \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/blockquote\u003e\n\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e易于使用，细节完美：采用 Micro-USB 5V 供电，内置扬声器保护负载。配备遥控器，可远程快速设置工作状态。所有设置可在关机后保存，使用更便捷。\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n \u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003e尺寸合适，外观精美：酷黑色外壳、温暖的 VU 表和清晰的指示器看起来复古而动感，可以完美匹配各种使用场景，非常适合拥有多个放大器或扬声器的发烧友。\u003c\/span\u003e \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv data-mce-fragment=\"1\"\u003e\n\n\u003chr data-mce-fragment=\"1\"\u003e\n\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cstrong\u003e温馨提示\u003c\/strong\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan data-mce-fragment=\"1\"\u003e为了更安全、更快地交付，遥控器可能不包含电池（CR2025 3V），请自行准备。\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e请勿将VU3连接到实际输出功率大于300W的功放上，否则可能损坏VU表。\u003c\/li\u003e\n\n\u003cli\u003e关闭VU3电源后，功放B通道和音箱2通道将自动切换，并正常输入输出音频信号。再次打开VU3电源后，将自动切换到之前设置的通道。 \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\u003chr data-mce-fragment=\"1\"\u003e\n\n\u003cdiv style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cstrong\u003e参数\u003c\/strong\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: left;\" id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e音频输入\/输出：2组香蕉母头\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e工作模式：二进一出\/一进二出\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e支持的放大器类型：所有类型（BTL \/ A类 \/ AB类 \/ B类 \/ D类数字放大器 \/ 电子管放大器等）\u003c\/li\u003e\n\n \u003cli data-mce-fragment=\"1\"\u003e每通道最大通过功率：300W（实际）\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e背光亮度调节：4级调节（可关闭）\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e功放空载保护：支持\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e远程控制功能：支持\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e关机保存设置：支持\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e工作电压：DC 5V（1A以上）\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e电源接口：Type-C\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e遥控器电池型号：CR2025 3V（可能不包含）\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e VU表直径：60*35mm\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e尺寸（宽*深*高）：178*118*68毫米\/7.01*4.65*2.68英寸\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e包装尺寸（宽*深*高）：280*185*155毫米\/11.02*7.28*6.10英寸\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e净重：980克\/2.16磅\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e包装重量：1.2千克\/2.65磅\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\u003chr data-mce-fragment=\"1\"\u003e\n\n\u003cdiv style=\"text-align: left;\" id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\u003cstrong\u003e包装清单\u003c\/strong\u003e\u003c\/div\u003e\n\n\u003cdiv id=\"pastingspan1\" data-mce-fragment=\"1\"\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e 1*VU3 音量表和音频切换器\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e1*遥控器（不含电池）\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e 1*USB 数据线\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1*用户手册\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"我们","offer_id":47406706295016,"sku":"XX-VU3-US","price":129.99,"currency_code":"USD","in_stock":true},{"title":"英国","offer_id":47406706327784,"sku":"XX-VU3-UK","price":129.99,"currency_code":"USD","in_stock":true},{"title":"欧盟","offer_id":47406706360552,"sku":"XX-VU3-DE","price":129.99,"currency_code":"USD","in_stock":true},{"title":"非盟","offer_id":47406706393320,"sku":"XX-VU3-AU","price":129.99,"currency_code":"USD","in_stock":true},{"title":"其他","offer_id":47406706426088,"sku":"XX-VU3","price":138.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/products\/XX-VU3_3.jpg?v=1650962469"},{"product_id":"douk-audio-dac-t1-pro-hifi-tube-stereo-preamp-usb-dac-bluetooth-receiver-s-pdif-d-a-audio-converter","title":"Douk Audio DAC-T1 PRO HiFi 电子管立体声前置放大器 USB DAC 蓝牙接收器 S\/PDIF D\/A 音频转换器","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e特征\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e外观与功能的绝妙结合：DAC-T1-PRO DAC 将复古电子管与现代 OLED 显示屏融为一体，既保留了浓郁的复古气息，又兼具便捷的使用体验。即使在有限的空间内，温暖的灯丝也能动态地点缀音频系统，带来大动态、甜美音色的美妙听觉享受。\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e \n\u003cspan data-mce-fragment=\"1\"\u003e具有多种音频输入和输出：蓝牙\/PC-USB\/同轴\/光纤\/RCA输入，兼容大多数音频源，如手机、平板电脑、电脑、数字播放器等。\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e具有立体声 RCA 和 3.5 毫米耳机插孔输出，可连接不同的放大器\/有源扬声器\/耳机，轻松享受 HiFi 音乐。\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e进口 JAN5654 电子管，复古温暖音色：配备 JAN5654 电子管，大幅提升音乐的各项细节，音色柔和细腻，动态悦耳。通过旁路功能，轻松对比数码音色和电子管音色的差异。可插拔电子管座设计，可升级至 6*1N、6AK5、EF95 等，享受不同风格的电子管音色。\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e \n\u003cspan data-mce-fragment=\"1\"\u003e设计精良，细节完美：支持高音和低音控制，轻松调节个人喜好的音效风格。除了配备大型OLED显示屏显示工作状态外，还配备全功能遥控器，方便用户进行所有设置。功能强大，外观精美，非常适合在有限空间内追求HiFi音效的音响爱好者。\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e采用高端材料和独特结构，确保更佳性能：\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e \u003cspan data-mce-fragment=\"1\"\u003eQCC5125蓝牙芯片，支持ACC\/SBC\/APTX\/APTX-HD\/LDAC，实现更远距离、无损信号传输，无延迟。\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e \u003cspan data-mce-fragment=\"1\"\u003eESS9028Q2M独立DAC芯片，OPA1656运放，NJW1194数字音调控制芯片，动态范围更大，失真更低，解析力更高。\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e9123 USB芯片搭配专用驱动，支持24Bit\/192Khz传输，提高音质。\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e经典的耳放架构（2*NE5532），提供更大的输出功率，足以驱动300Ω耳机。\u003c\/span\u003e \n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003chr data-mce-fragment=\"1\"\u003e\n\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e参数\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e芯片架构：QCC5125（蓝牙芯片）+9123（USB芯片）+ESS9028Q2M（DAC芯片）+NE5532（耳放）\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e音频输入：蓝牙\/PC-USB\/同轴\/光纤\/立体声RCA\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e音频输出：立体声 RCA \/ 3.5mm 耳机插孔\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e蓝牙版本：5.0（支持APTX \/APTX-HD \/ LDAC）\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e支持的采样率：\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e \u003cspan data-mce-fragment=\"1\"\u003ePC-USB：24位\/192KHz\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e同轴\/光纤：24bit\/192KHz\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n \u003cspan data-mce-fragment=\"1\"\u003ePC-USB操作系统支持：W7\/W8\/W10\/MAC\/Linux\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e频率响应：20Hz-20KHz（±0.5dB）\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e总谐波失真：0.08%\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e信噪比：≥110dB\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e高音\/低音控制：±6db\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e匹配耳机阻抗：16-300Ω\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e耳机输出功率：150mW\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e输出电平：2.4Vrms\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e工作电压：DC12V\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e \n\u003cspan data-mce-fragment=\"1\"\u003e尺寸（宽*深*高）：185*128*41毫米\/7.28*5.04*1.61英寸\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\n\n\u003cspan data-mce-fragment=\"1\"\u003e净重：622克\/1.37磅\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e包装重量：1.1千克\/2.43磅\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003chr data-mce-fragment=\"1\"\u003e\n\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e温馨提示：\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e \u003cspan data-mce-fragment=\"1\"\u003e1.为了更安全、更快地交货，遥控器可能不包含电池（2*AAA），请自行准备。\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e \u003cspan data-mce-fragment=\"1\"\u003e2. 3.5mm耳机插孔输出优先，插入耳机时立体声RCA输出将自动断开。\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e \u003cspan data-mce-fragment=\"1\"\u003e3. PC-USB（win10 以下系统）输入需要专用驱动程序才能实现 24Bit\/192KHz 传输，请在收到 DAC-T1 PRO 时联系我们获取。DAC-T1 PRO 也支持 OTG 功能，但安卓系统需要 OTG 线，iOS 系统需要摄像头套件，请自行准备。\u003c\/span\u003e\u003c\/p\u003e\n\n\u003chr data-mce-fragment=\"1\"\u003e\n\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e包装清单\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e \n\u003cspan data-mce-fragment=\"1\"\u003e1*DAC-T1 PRO DAC\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n \u003cspan data-mce-fragment=\"1\"\u003e2*5654真空管\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n \u003cspan data-mce-fragment=\"1\"\u003e1*DC 12V电源适配器\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n \u003cspan data-mce-fragment=\"1\"\u003e1*USB 数据线\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n \u003cspan data-mce-fragment=\"1\"\u003e1*光缆\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n \u003cspan data-mce-fragment=\"1\"\u003e1*蓝牙天线\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n \u003cspan data-mce-fragment=\"1\"\u003e1*遥控器（不含电池）\u003c\/span\u003e \u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e \u003cspan data-mce-fragment=\"1\"\u003e1*用户手册\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"我们","offer_id":47406944387304,"sku":"SUC-DAC-T1-PRO-US","price":169.99,"currency_code":"USD","in_stock":true},{"title":"英国","offer_id":47406944420072,"sku":"SUC-DAC-T1-PRO-UK","price":169.99,"currency_code":"USD","in_stock":true},{"title":"欧盟","offer_id":47406944452840,"sku":"SUC-DAC-T1-PRO-DE","price":169.99,"currency_code":"USD","in_stock":true},{"title":"非盟","offer_id":47406944485608,"sku":"SUC-DAC-T1-PRO-AU","price":169.99,"currency_code":"USD","in_stock":true},{"title":"其他","offer_id":47406944518376,"sku":"SUC-DAC-T1-PRO","price":179.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/products\/1_b67170da-2230-4e46-899b-42e24b3c5900.jpg?v=1654161296"},{"product_id":"nobsound-ns-14g-bluetooth-hifi-2-1-channel-power-amplifier-subwoofer-stereo-audio-amp","title":"Nobsound NS-14G 蓝牙 HiFi 2.1 声道功率放大器低音炮立体声音频放大器","description":"\u003c!-- x-tinymce\/html --\u003e\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e特征\u003c\/p\u003e\n\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e2种音频输入：支持蓝牙实现稳定高速传输，具有立体声RCA输入，几乎兼容所有家用音频设备，如手机、平板电脑、电脑、CD播放器等。 \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e经典芯片和2.1声道系统：采用TPA3116芯片，带AUX和扬声器输出，轻松组建多声道系统，最大输出功率可达50W*2（L\/R）和100W（低音炮）。 \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e强大的设计：除了输入选择器外，还配有丰富的可调节旋钮，以满足不同的聆听需求，包括主音量、高音和低音、低音炮频率和音量，甚至 L\/R 通道的平衡都可以根据您的喜好进行调整并享受音乐。\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n \u003cli data-mce-fragment=\"1\"\u003e外观精美：迷你尺寸，优雅的铝制外壳，黑色和红色旋钮设计使其更加时尚，实用且功能强大。DC 15-24V电压，适合家庭和桌面音响系统使用，享受高品质音乐。 \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003chr data-mce-fragment=\"1\"\u003e\n\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e参数\u003c\/p\u003e\n\n\u003cul style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e音频输入：蓝牙\/立体声 RCA\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e音频输出：AUX\/香蕉扬声器插孔\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e通道数：2.1\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e最大输出功率：50W*2(L\/R声道)+100W(低音炮)\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e扬声器阻抗：4-8Ω（左\/右）\u003cbr data-mce-fragment=\"1\"\u003e 2-8Ω（低音炮）\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e高低音调节范围：±6dB\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e AUX最大输出电平：1.2V\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e低音截止频率：40-120Hz\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e输入灵敏度：0.775V\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e频率响应：20Hz-20KHz（±2dB）\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e总谐波失真：0.07%（1kHz）\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e信噪比：≥92dB\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e工作电压：DC 15-24V\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e包装尺寸（宽*深*高）：133*125*36毫米\/5.24*4.92*1.42英寸\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e净重：580克\/1.28磅\u003c\/li\u003e\n\n\u003cli data-mce-fragment=\"1\"\u003e包装重量：1.2千克\/2.65磅\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003chr data-mce-fragment=\"1\"\u003e\n\n\u003cp style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e包装清单\u003c\/p\u003e\n\n\u003cul data-mce-fragment=\"1\"\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e1×NS-14G功率放大器\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e1×24V\/4.5A电源\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\" data-mce-fragment=\"1\"\u003e1×蓝牙天线\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"我们","offer_id":47198661443816,"sku":"SUC-NS-14G-24V-US","price":99.99,"currency_code":"USD","in_stock":true},{"title":"英国","offer_id":47406939701480,"sku":"SUC-NS-14G-24V-UK","price":99.99,"currency_code":"USD","in_stock":true},{"title":"欧盟","offer_id":47406939734248,"sku":"SUC-NS-14G-24V-DE","price":99.99,"currency_code":"USD","in_stock":true},{"title":"非盟","offer_id":47406939767016,"sku":"SUC-NS-14G-24V-AU","price":99.99,"currency_code":"USD","in_stock":true},{"title":"其他","offer_id":47406939799784,"sku":"SUC-NS-14G-24V","price":99.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/SUC-NS-14G_4.jpg?v=1690270229"},{"product_id":"douk-audio-t9-hifi-magic-6e2-vacuum-tube-stereo-preamp-mm-mc-phono-stage-for-turntable-amp","title":"Douk Audio T9 HiFi Magic 6E2 真空管立体声前置放大器 MM\/MC 唱机放大器","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e温馨提示\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1.两支6E2管的偏压和增益在出厂时已经设置好，安装时请注意管子上的R\/L通道标记，不要插错。\u003c\/span\u003e\u003cbr\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2.3.5mm耳机接口优先，如需RCA输出请确保耳机已断开。\u003c\/span\u003e\u003cbr\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e3.可插拔电子管座设计，6A2可方便更换为6K4、EF93、6BA6、W727等电子管，享受不同风格的电子管声音。\u003c\/span\u003e\u003cbr\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e4. T9 是前置放大器而不是功率放大器，需要与放大器或有源扬声器配合使用。\u003c\/span\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e特征\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n \u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e复古真空管，双重享受：增加魔眼6E2电子管，动态展现信号电平，色彩纯正亮度高，并可切换冷绿暖橙背光，带来精彩的视觉盛宴；默认6A2电子管，提升音乐的一切质感，音色温暖自然，饱满醇厚，带给您耳目一新的听觉盛宴。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\n\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e带有 Phono 和 RCA 输入的 T9 电子管前置放大器：\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e唱机输入，支持MM\/MC唱头一键切换，将唱机信号转换为线路电平信号，低噪音集成电路和高品质元件确保声音清晰。\u003c\/span\u003e \u003cbr\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e立体声 L\/R RCA 输入，放大来自手机、平板电脑、PC、MP3 等的低电平音频信号，更容易驱动放大器或有源扬声器并大大提高其音质。\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e3.5毫米耳机输出和音调控制：除了立体声RCA输出外，还配备独立的3.5毫米耳机放大器电路，可轻松驱动所有16-300Ω耳机。通过调节高音\/低音旋钮，您可以享受更加细腻流畅、高亢激昂、低音深沉的音效，让您的音响系统焕然一新。\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n \u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e外观精美，设计强劲：全金属外壳和CNC铝面板，屏蔽性能良好，有效避免外部干扰。滚花旋钮坚固耐用，所有I\/O接口均镀金，确保原始音频信号传输紧密顺畅，最大程度减少信号损失。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e如何调整6E2电子管的偏压和增益？\u003cbr\u003e 1.打开T9电源，不要输入任何源信号；\u003cbr\u003e 2、调节BIAS，使最下方显示6E2管绿灯；\u003cbr\u003e 3.然后输入音频信号，调节GAIN使6E2显示在合适的位置，左右平衡。\u003c\/span\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e参数\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e音频输入：立体声 RCA \/ Phono MM(MC)\u003c\/span\u003e\u003c\/li\u003e\n\n \u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e音频输出：立体声 RCA \/ 3.5 毫米耳机插孔\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e耳机阻抗范围：16-300Ω\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e耳机输出功率：\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\n\n \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e250毫瓦@32Ω\u003c\/span\u003e\u003cbr\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e100毫瓦@64Ω\u003c\/span\u003e\u003cbr\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e60毫瓦@128Ω\u003c\/span\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\n\n \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eRCA 输入：\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e输入电平：0.775V RMS\u003c\/span\u003e\u003c\/div\u003e\n\n \u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e输出电平：1.5V RMS\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e输入阻抗：100K欧姆\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e信噪比：≥106dB\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\n\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e频率响应：20Hz-20KHz（±0.5dB）\u003c\/span\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e唱机输入：\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e输入电平：0.005V RMS（MM）\/0.0005V RMS（MC）\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\n\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e输出电平：0.6V RMS\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-family: times new roman, times;\"\u003e\u003cspan style=\"font-size: 18.6667px;\"\u003e输入阻抗： \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e47K欧姆\u003c\/span\u003e（MM）\/330欧姆（MC）\u003c\/span\u003e\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n \u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e\u003cspan style=\"font-family: times new roman, times;\"\u003e\u003cspan style=\"font-size: 18.6667px;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e信噪比：≥80dB\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e \u003cspan style=\"font-family: times new roman, times;\"\u003e\u003cspan style=\"font-size: 18.6667px;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e频率响应：参考RIAA±2dB\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e总谐波失真：≤0.1%\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e电子管：2×6E2；2×6A2\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e高音\u0026amp;低音：±10dB\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e背光颜色可调：绿色\/橙色\/关闭\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e工作电压：DC 12V（≥1A）\u003c\/span\u003e\u003c\/li\u003e\n\n \u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e尺寸（宽*深*高）：154*87*47毫米\/6.06*3.43*1.85英寸\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e包装尺寸（宽*深*高）：210*190*100mm \/ 8.27*7.48*3.94英寸\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e净重：600克\/1.32磅\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e包装重量：1.0kg\/2.20lb\u003c\/span\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv style=\"text-align: left;\"\u003e\n\n\u003chr\u003e\n\n\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e包装清单\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cul\u003e\n\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*T9前置放大器\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2*6E2电子管\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2*6A2电子管\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*DC12V电源\u003c\/span\u003e\u003c\/li\u003e\n\n \u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*手册\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"doukaudio","offers":[{"title":"我们","offer_id":47406688403688,"sku":"XX-T9-US","price":134.99,"currency_code":"USD","in_stock":true},{"title":"英国","offer_id":47406688436456,"sku":"XX-T9-UK","price":134.99,"currency_code":"USD","in_stock":true},{"title":"欧盟","offer_id":47406688469224,"sku":"XX-T9-DE","price":134.99,"currency_code":"USD","in_stock":true},{"title":"非盟","offer_id":47406688501992,"sku":"XX-T9-AU","price":134.99,"currency_code":"USD","in_stock":true},{"title":"其他","offer_id":47406688534760,"sku":"XX-T9","price":134.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/XX-T9_1.jpg?v=1781684472"},{"product_id":"douk-audio-dac-q11-hifi-ess9038-akm4493-usb-dac-audio-adapter-coax-opt-d-a-converter-dsd256","title":"Douk Audio DAC-Q11 HiFi ESS9038Q2M+AK4493 USB DAC 音频适配器 COAX\/OPT D\/A 转换器 DSD256","description":"\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e温馨提示：\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"text-align: left;\"\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1.为了更安全、更快地交货，遥控器可能不包含电池（2*AAA），请自行准备。\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"text-align: left;\"\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e2. Win7系统需要安装驱动才能识别PC-USB，其他系统仅在播放DSD文件时才需要安装驱动。\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp style=\"text-align: left;\"\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e3. 2组立体声RCA和3.5mm AUX输出可同时工作，并可同时控制输出音量。\u003c\/span\u003e\u003c\/p\u003e\n\n \u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e4. 拥有3种工作模式，2种不同的音效，支持AK4493或ESS9038Q2M同时输出到1组和2组，或者AK4493输出到1组，ESS9038Q2M输出到2组。\u003c\/span\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e特征\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e可切换双DAC芯片：率先采用自主研发的DAC芯片切换技术，并拥有自主专利，采用两颗DAC芯片——ESS9038Q2M和AK4493。这一突破性的设计使用户能够享受ESS9038Q2M强劲的动态和AK4493细腻的音色，从而大幅提升个性化音频体验，开拓HiFi领域的新领域。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n \u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e高性能：卓越的信噪比（≥117dB）和0.0003%的超低总谐波失真（THD），确保音频信号的高质量转换。PC-USB输入支持32Bit\/384kHz传输和DSD256播放，适合追求极致音质的用户。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e丰富的输入输出接口：支持光纤、同轴、PC-USB等输入，兼容手机、电脑、数码播放器等音源。配备2组RCA接口和2组AUX输出，为用户提供丰富的连接选择，方便与各种音源和播放设备集成，适应不同的使用场景。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n \u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e双 OLED 显示屏和大音量旋钮：两块 OLED 屏幕可显示实时采样率、音量和解码芯片状态，提升用户使用便利性。采用易于使用的大尺寸音量控制旋钮设计，确保用户能够进行精细、精确的音量调节，满足个性化的聆听偏好。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e精致迷人的外观：顶部采用玻璃视窗设计，内部结构一览无余，提升视觉效果。配备遥控器，操作更便捷；采用CNC技术一体成型，并结合阳极氧化工艺处理，满足现代审美，彰显对卓越品质的承诺。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e参数\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n \u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e音频输入：PC-USB\/同轴\/光纤\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e音频输出：2组立体声RCA\/2组AUX\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eDAC芯片：ESS9038Q2M+AK4493\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e支持的最大采样率：\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePC-USB：PCM 32位\/384KHz DSD256\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e同轴\/光纤：24bit\/192KHz\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003ePC-USB操作系统支持：W7\/W8\/W10\/MAC\/Linux\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e频率响应：20Hz-20KHz（±0.3dB）\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e总谐波失真+噪声：0.0003%@1kHz\u003c\/span\u003e\u003c\/li\u003e\n\n \u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e信噪比：≥117dB\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e额定输出电平：\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eAK4493:1.8V\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"padding-left: 40px; text-align: left;\"\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003eESS9038Q2M:2V\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e工作电压：DC 12V≥1.5A\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e尺寸（宽*深*高）：155*125*42毫米\/6.10*4.92*1.65英寸\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e净重：590 \/ 1.30磅\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e包装重量：1.10千克\/2.43磅\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e包装清单\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*DAC-Q11\u003c\/span\u003e\u003c\/li\u003e\n\n \u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*DC12V电源适配器\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*USB 数据线\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*光缆\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003e\u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*遥控器（不含电池）\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003e \u003cspan style=\"font-family: 'times new roman', times; font-size: 14pt;\"\u003e1*用户手册\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003c!----\u003e","brand":"Douk Audio","offers":[{"title":"我们","offer_id":47406446346472,"sku":"SUC-DAC-Q11-US","price":149.99,"currency_code":"USD","in_stock":true},{"title":"英国","offer_id":47406446379240,"sku":"SUC-DAC-Q11-UK","price":149.99,"currency_code":"USD","in_stock":true},{"title":"欧盟","offer_id":47406446412008,"sku":"SUC-DAC-Q11-DE","price":149.99,"currency_code":"USD","in_stock":true},{"title":"非盟","offer_id":47406446444776,"sku":"SUC-DAC-Q11-AU","price":149.99,"currency_code":"USD","in_stock":true},{"title":"其他","offer_id":47406446477544,"sku":"SUC-DAC-Q11","price":159.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/SUC-DAC-Q11_1.jpg?v=1719385937"},{"product_id":"douk-audio-vu3pro-amplifier-speaker-selector-vu-meter-2-in-2-out-switcher-box","title":"Douk Audio VU3PRO 功放\/扬声器选择器 VU 表 2 进 2 出切换盒","description":"\u003cdiv style=\"text-align: left;\"\u003e\u003cspan\u003e注意：目前只有黄色 VU 表版本可用，蓝色版本即将推出。\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: left;\"\u003e\n\n\u003chr\u003e\n\n\u003cspan\u003e特征\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n \u003cli\u003e\u003cspan\u003eVU3 Pro 功放\/音箱选择器：VU3 的全面升级版，在尺寸、功能和性能上都有了很大的改进。2 进 2 出（两组音箱插孔同时支持输出），可灵活切换和比较 2 个功放和 2 对音箱，无需反复插拔线缆，避免磨损插座的触点。\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\u003cspan\u003e最高 350W 功率传输和超强兼容性：随着大功率功放的日益普及，对转换器的功率要求也随之提升。VU3Pro 最高直通功率达 350W，支持各种类型的大功率数字和电子管功放（BTL、A 类、B 类、AB 类、D 类等），包括 300W TPA3255 功放和落地式扬声器。\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n \u003cli\u003e\u003cspan\u003e定制大型 VU 表，玩法多样：VU3Pro 配备双大型 VU 表和更大尺寸的机身，完美兼容更多尺寸的音频设备。它提供 35 种背光颜色和 5 级亮度，可适应各种场景。此外，它还支持 20 级增益和 30 级灵敏度调节，确保与不同的音频信号完美匹配，让您尽享活力四射的视听盛宴。\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\u003cspan\u003e有线\/无线输入，易于使用：VU3Pro 增加了麦克风拾音功能，只需将其放置在音响系统附近，两个温暖复古的 VU 表清晰显示，清晰呈现音乐的每一个节拍，动态激活您的音频盛宴。只需一个按钮和遥控器，即可轻松切换大多数设置，简化 A\/B 比较过程，并且所有设置将在关机后保存。\u003cbr\u003e\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n \u003cli\u003e\n\u003cspan\u003e优质组件，带来最纯净的音质：VU3Pro 集成 AC 250V 5A 大电流继电器、隔离高精度 HL 电流传感器、内置大功率负载电阻器（可保护 A 类电子管放大器在空载时免受损坏）、坚固的 CNC 铝合金面板和金属底盘、大型纯铜扬声器插孔等，确保音质几乎不受影响或损失，让您享受最纯净的高保真声音。\u003c\/span\u003e \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv style=\"text-align: left;\"\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003e温馨提示\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e1.Speaker 1和Speaker 2两组可同时输出。\u003c\/span\u003e\u003cbr\u003e \u003cspan\u003e2. VU3Pro 的扬声器输出若未连接音箱，音量表将无法正常工作。如果您只需要音量表功能，请选择 MIC 输入。\u003c\/span\u003e\u003cbr\u003e \u003cspan\u003e3.请勿将VU3PRO连接到实际输出功率大于350W的功放，否则可能会损坏VU表。\u003c\/span\u003e\u003cbr\u003e \u003cspan\u003e4.为了更安全、更快地发货，遥控器可能不包含电池（AAA*2），请自行准备。\u003c\/span\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n \u003cp style=\"text-align: left;\"\u003e\u003cspan\u003eVU3 与 VU3Pro 的比较\u003c\/span\u003e\u003c\/p\u003e\n\n\u003ctable style=\"margin-left: 0px; margin-right: auto; width: 100.062%;\" border=\"1\"\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"width: 58.5992%;\"\u003e物品\u003c\/td\u003e\n\n\u003ctd style=\"width: 1.81818%;\"\u003eVU3Pro\u003c\/td\u003e\n\n\u003ctd style=\"width: 38.9316%;\"\u003e \u003cspan\u003eVU3\u003c\/span\u003e\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"width: 58.5992%;\"\u003e VU表的大小\u003c\/td\u003e\n\n\u003ctd style=\"width: 1.81818%;\"\u003e85*45毫米\/3.35*1.77英寸\u003c\/td\u003e\n\n\u003ctd style=\"width: 38.9316%;\"\u003e\u003cspan\u003e60*35毫米\/2.36*1.38英寸\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"width: 58.5992%;\"\u003e底盘尺寸\u003c\/td\u003e\n\n\u003ctd style=\"width: 1.81818%;\"\u003e268*155*75毫米\/10.55*6.10*2.95英寸\u003c\/td\u003e\n\n\u003ctd style=\"width: 38.9316%;\"\u003e\u003cspan\u003e178*118*68毫米\/7.01*4.65*2.68英寸\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"width: 58.5992%;\"\u003e麦克风输入\u003c\/td\u003e\n\n\u003ctd style=\"width: 1.81818%;\"\u003e支持\u003c\/td\u003e\n\n\u003ctd style=\"width: 38.9316%;\"\u003e\u003cspan\u003e×\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"width: 58.5992%;\"\u003e\u003cspan\u003e同时输出\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd style=\"width: 1.81818%;\"\u003e支持\u003c\/td\u003e\n\n\u003ctd style=\"width: 38.9316%;\"\u003e\u003cspan\u003e×\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"width: 58.5992%;\"\u003e\u003cspan\u003e单独增益调节\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd style=\"width: 1.81818%;\"\u003e20级\u003c\/td\u003e\n\n\u003ctd style=\"width: 38.9316%;\"\u003e\u003cspan\u003e×\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"width: 58.5992%;\"\u003e\u003cspan\u003e单独灵敏度调节\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd style=\"width: 1.81818%;\"\u003e30级\u003c\/td\u003e\n\n\u003ctd style=\"width: 38.9316%;\"\u003e\u003cspan\u003e×\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"width: 58.5992%;\"\u003e\u003cspan\u003e背光颜色调整\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd style=\"width: 1.81818%;\"\u003e35种\u003c\/td\u003e\n\n\u003ctd style=\"width: 38.9316%;\"\u003e\u003cspan\u003e×\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"width: 58.5992%;\"\u003e\u003cspan\u003e背光亮度调节\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd style=\"width: 1.81818%;\"\u003e5级\u003c\/td\u003e\n\n\u003ctd style=\"width: 38.9316%;\"\u003e\u003cspan\u003e4级\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"width: 58.5992%;\"\u003e\u003cspan\u003e最大直通功率\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd style=\"width: 1.81818%;\"\u003e350瓦\u003c\/td\u003e\n\n\u003ctd style=\"width: 38.9316%;\"\u003e\u003cspan\u003e300瓦\u003c\/span\u003e\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd style=\"width: 58.5992%;\"\u003e\u003cspan\u003eUSB 5V电源适配器\u003c\/span\u003e\u003c\/td\u003e\n\n\u003ctd style=\"width: 1.81818%;\"\u003e包括\u003c\/td\u003e\n\n\u003ctd style=\"width: 38.9316%;\"\u003e\n\u003cspan\u003e×\u003c\/span\u003e \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\u003cp style=\"text-align: left;\"\u003e\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"text-align: left;\"\u003e\u003cspan\u003e参数\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e品牌：Douk Audio\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e型号：VU3Pro\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cspan\u003eVU表直径：85*45mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e音频输入\/输出：2组香蕉母头\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e工作模式：2进2出\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e \n\u003cspan\u003e支持的每个通道的最大通过功率（实际）：\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv style=\"text-align: left;\"\u003e\n\n \u003cspan\u003e350瓦@4Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv style=\"text-align: left;\"\u003e\n\n \u003cspan\u003e200W@2Ω\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e支持的放大器类型：所有类型（BTL\/A类\/B类\/D类数字放大器\/电子管放大器）\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e功放空载保护：支持\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e频率响应：30Hz-20kHz\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e背光颜色：35种颜色选择或自动变化\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e背光亮度：5级（关闭-30%-50%-80%-100%）\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e增益：20级\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e灵敏度：30级\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003eMIC拾音：支持\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e远程控制：支持\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e关机保存设置：支持\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e工作电压：DC 5V≥2A\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e电源接口：Type-C\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e尺寸（宽*深*高）：268*155*75毫米\/10.55*6.10*2.95英寸\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e \n\u003cspan\u003e包装尺寸（宽*深*高）：380*220*95毫米\/14.96*8.66*3.74英寸\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e净重：1.61千克\/3.55磅\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e包装重量：2.00千克\/4.41磅\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003cp style=\"text-align: left;\"\u003e \u003cspan\u003e包装清单：\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli style=\"text-align: left;\"\u003e\n\n \u003cspan\u003e1*VU3Pro\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003e\n\n \u003cspan\u003e1*电源适配器\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003e\n\n\u003cspan\u003e1*遥控器（不含电池）\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli style=\"text-align: left;\"\u003e \u003cspan\u003e1*USB 数据线（Type-C）\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"黄色的 \/ 我们","offer_id":46655169954024,"sku":"XX-VU3-PRO-L-US","price":154.99,"currency_code":"USD","in_stock":true},{"title":"黄色的 \/ 英国","offer_id":47406396571880,"sku":"XX-VU3-PRO-L-UK","price":154.99,"currency_code":"USD","in_stock":true},{"title":"黄色的 \/ 欧盟","offer_id":47406396604648,"sku":"XX-VU3-PRO-L-DE","price":154.99,"currency_code":"USD","in_stock":true},{"title":"黄色的 \/ 非盟","offer_id":47406396637416,"sku":"XX-VU3-PRO-L-AU","price":154.99,"currency_code":"USD","in_stock":true},{"title":"黄色的 \/ 其他","offer_id":47406396670184,"sku":"XX-VU3-PRO-L","price":154.99,"currency_code":"USD","in_stock":true},{"title":"蓝色的 \/ 我们","offer_id":46655169986792,"sku":"XX-VU3-PRO-B-US","price":149.99,"currency_code":"USD","in_stock":false},{"title":"蓝色的 \/ 英国","offer_id":47406396702952,"sku":"XX-VU3-PRO-B-UK","price":149.99,"currency_code":"USD","in_stock":false},{"title":"蓝色的 \/ 欧盟","offer_id":47406396735720,"sku":"XX-VU3-PRO-B-DE","price":149.99,"currency_code":"USD","in_stock":false},{"title":"蓝色的 \/ 非盟","offer_id":47406396768488,"sku":"XX-VU3-PRO-B-AU","price":149.99,"currency_code":"USD","in_stock":false},{"title":"蓝色的 \/ 其他","offer_id":47406396801256,"sku":"XX-VU3-PRO-B","price":159.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/XX-VU3PRO_1.jpg?v=1724806976"},{"product_id":"douk-audio-u2-pro-xmos-xu316-digital-interface","title":"Douk Audio U2 PRO XMOS XU316 数字接口","description":"\u003cdiv\u003e\u003cspan\u003e特征\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e解锁纯净无损音频：轻松将 PC、Mac、手机或 Raspberry Pi 等设备的 USB 信号转换为清晰的光纤、同轴和 I2S 同步输出。无需 USB 输入，即可为经典的 DAC、功放和 AV 接收器提供清晰、稳定、无抖动的数字信号，立即提升音质。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003eXMOS XU316 带来超高分辨率：U2 PRO 配备最新的 XMOS XU316 芯片，确保几乎零延迟、稳定的信号传输和卓越的音质。支持高达 32bit\/768kHz 的 PCM 和 DSD512，非常适合高端音乐流媒体和专业音频播放。\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\n \u003cli\u003e\u003cspan\u003e通过 UAC 模式开关实现强大的兼容性：专门设计了 UAC 模式开关，1.0 模式为 PS4、PS5 和 Switch 等游戏机提供即插即用、免驱动程序兼容性，而 2.0 模式则支持高分辨率音频，满足高级播放需求。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e可扩展的振荡器设计：U2 PRO 拥有充足的内部空间来容纳兼容的晶体振荡器，让发烧友和 DIY 爱好者可以自由升级他们喜欢的高精度时钟，以进一步减少抖动并实现更高水平的声音性能和系统协同作用。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e紧凑尺寸，便捷指示灯：U2 PRO 尺寸小巧，USB 供电，配备 USB-C 转 USB-A\/C 线缆，兼容各种设备，真正实现即插即用。实时 PCM\/DSD 指示灯可轻松监控采样率和格式。无论是音响发烧友还是游戏玩家，都能轻松升级，带来强大功能。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv\u003e\n\n\u003chr\u003e\n\n\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan\u003e温馨提示\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n \u003cdiv\u003e\u003cspan\u003e1. U2 PRO 支持 Windows 10\/11、macOS、Android 和 iOS 系统。Windows 10 及更高版本无需驱动即可播放高达 384kHz 的 PCM，但更高的采样率和 DSD 播放需要安装驱动程序。macOS 无需驱动即可运行。为避免潜在的兼容性问题，不建议使用 Windows 7\/8 或通用 Linux 系统。本产品支持基于 Linux 的音频系统，例如 Daphile、Volumio 和 ROON。\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e \u003cspan\u003e2. U2 PRO 支持更换振荡器（不可插拔，需要焊接）。默认 24.000 MHz ±20 PPM 5032 有源振荡器，可更换为 DIP-4P 矩形插件有源振荡器或 5030 SMD 有源振荡器。\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e \u003cspan\u003e3. U2 PRO 仅支持 2.0 声道立体声音频，不支持 5.1、7.1 或杜比等多声道格式。\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e \u003cspan\u003e4. 请从附带的 USB 驱动器安装所需的驱动程序和文件，然后按照说明或视频指南正确设置您的播放器。\u003c\/span\u003e\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003chr\u003e\n\n\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan\u003e参数\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cul\u003e\n\n \u003cli\u003e\u003cspan\u003e品牌：Douk Audio\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e型号：U2 PRO\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e音频输入：USB Type-C\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e音频输出：同轴\/光纤\/HDMI-IIS\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003eUSB芯片：XMOS XU316\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e输出模式切换：UAC 1.0\/UAC 2.0\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e支持的最大采样率同轴\/光纤：\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv\u003e \u003cspan\u003ePCM：44.1kHz-192kHz\/16位-24位\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan\u003eDSD：DOP DSD64\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cdiv\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003eIIS 支持的最大采样率：\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e \u003cspan\u003ePCM：44.1kHz-768kHz\/16位-32位\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan\u003eDSD（本机）：64-512\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e \u003cspan\u003eDSD（数字音频）：64-256\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003ePC-USB 支持的操作系统：W10\/W11\/Mac OS\/Android\/iOS\/PS5\/Switch\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e抖动：75ps（典型值）\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e总谐波失真+噪声：0.000008%\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e工作电压：DC 5V\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e尺寸（宽*深*高）：85*79*26毫米\/3.35*3.11*1.02英寸\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e包装尺寸（宽*深*高）：195*155*70毫米\/7.68*6.10*2.64英寸\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e净重：220克\/0.44磅\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e包装重量：400克\/0.88磅\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003chr\u003e\n\n\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan\u003e包装清单\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e1* U2 PRO 数字接口\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e1* 光缆\u003c\/span\u003e\u003c\/li\u003e\n\n \u003cli\u003e\u003cspan\u003e1* USB-C 转 USB-A\/USB-C 线缆\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e1*用户手册\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"我们","offer_id":47431035650280,"sku":"SUC-U2-PRO-US","price":69.99,"currency_code":"USD","in_stock":true},{"title":"我们 \/ TXCO Version","offer_id":47786743693544,"sku":"SUC-U2-PRO-TXCO-US","price":99.99,"currency_code":"USD","in_stock":false},{"title":"我们 \/ Femtosecond Version","offer_id":47786743726312,"sku":"SUC-U2-PRO-FS-US","price":199.99,"currency_code":"USD","in_stock":false},{"title":"英国","offer_id":47431035683048,"sku":"SUC-U2-PRO-UK","price":69.99,"currency_code":"USD","in_stock":true},{"title":"英国 \/ TXCO Version","offer_id":47786743759080,"sku":"SUC-U2-PRO-TXCO-UK","price":99.99,"currency_code":"USD","in_stock":false},{"title":"英国 \/ Femtosecond Version","offer_id":47786743791848,"sku":"SUC-U2-PRO-FS-UK","price":199.99,"currency_code":"USD","in_stock":false},{"title":"欧盟","offer_id":47431035715816,"sku":"SUC-U2-PRO-DE","price":69.99,"currency_code":"USD","in_stock":true},{"title":"欧盟 \/ TXCO Version","offer_id":47786743824616,"sku":"SUC-U2-PRO-TXCO-DE","price":99.99,"currency_code":"USD","in_stock":false},{"title":"欧盟 \/ Femtosecond Version","offer_id":47786743857384,"sku":"SUC-U2-PRO-FS-DE","price":199.99,"currency_code":"USD","in_stock":false},{"title":"非盟","offer_id":47431035748584,"sku":"SUC-U2-PRO-AU","price":69.99,"currency_code":"USD","in_stock":true},{"title":"非盟 \/ TXCO Version","offer_id":47786743890152,"sku":"SUC-U2-PRO-TXCO-AU","price":99.99,"currency_code":"USD","in_stock":false},{"title":"非盟 \/ Femtosecond Version","offer_id":47786743922920,"sku":"SUC-U2-PRO-FS-AU","price":199.99,"currency_code":"USD","in_stock":false},{"title":"其他","offer_id":47431035781352,"sku":"SUC-U2-PRO","price":69.99,"currency_code":"USD","in_stock":true},{"title":"其他 \/ TXCO Version","offer_id":47786743955688,"sku":"SUC-U2-PRO-TXCO","price":99.99,"currency_code":"USD","in_stock":false},{"title":"其他 \/ Femtosecond Version","offer_id":47786743988456,"sku":"SUC-U2-PRO-FS","price":199.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_b09c96fb-3537-4221-a5f9-51757a5cb535.jpg?v=1750412102"},{"product_id":"douk-audio-p7-hifi-tube-phono-preamp-with-hpf-stereo-audio-pre-amplifier-1","title":"Douk Audio P7 HiFi 电子管唱机前置放大器，带 HPF 立体声音频前置放大器","description":"\u003cdiv\u003e\u003cspan\u003e特征\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cul\u003e\n\n \u003cli\u003e\u003cspan\u003eMM 唱机\/RCA 输入灵活性：P7 既可用作唱机前置放大器，又可用作电子管前置放大器，非常适合连接转盘、电话、电视、CD 播放器等。P7 可增强声音清晰度，同时添加温暖的音调，展现您喜爱的音乐中的每一个细节。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003eXLR 输出，呈现纯净音质：除了标准 RCA 接口外，P7 还配备真正的平衡 XLR 输出，可降低噪音并提升动态范围。它非常适合放大器和有源扬声器，能够提供清晰的音频和更宽广的声场，确保无失真、身临其境的音效。\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003eHPF 带来更清晰的黑胶唱片播放：内置高通滤波器（仅限唱机输入）可滤除 20Hz 以下的次声波噪声，从而减少失真并提升声音清晰度。它确保播放更清晰，减少噪音，提升动态，让您的唱片更加鲜活。\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\n \u003cli\u003e\u003cspan\u003e真正的电子管放大：P7 搭载全新 PSVANE ECC83 电子管，可轻松更换以定制音质，为您的音频带来温暖甜美的音质。电子管以 180V 驱动，充分释放模拟声音的潜力，带来发烧友所钟爱的丰富谐波深度。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e精准音调控制，带旁路功能：\u003c\/span\u003e\u003cspan\u003e您可以微调低音和高音，打造个性化音效，或开启旁路模式，获得纯净无损的音质。无论您是调整音调还是聆听原始信号，P7 都能让您完全掌控聆听体验。\u003c\/span\u003e \n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv\u003e\n\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cp data-end=\"209\" data-start=\"31\"\u003e\u003cspan\u003e问：P7的输入电压是多少？\u003c\/span\u003e\u003cbr data-end=\"79\" data-start=\"76\"\u003e \u003cspan\u003eA：P7工作电压为DC 12V\/≥2A，电压过高会损坏，电流不足会影响正常工作。\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp data-end=\"439\" data-start=\"216\"\u003e\u003cspan\u003e问：我可以将转盘直接连接到 P7 吗？\u003c\/span\u003e\u003cbr data-end=\"271\" data-start=\"268\"\u003e\u003cspan\u003e答：连接前，请检查您的唱机是否内置唱机前置放大器。如果有，请使用 RCA 输入以避免不必要的噪音。\u003c\/span\u003e\u003c\/p\u003e\n\n \u003cp data-end=\"621\" data-start=\"446\"\u003e\u003cspan\u003e问：RCA 和 XLR 输出可以同时使用吗？\u003c\/span\u003e\u003cbr data-end=\"509\" data-start=\"506\"\u003e\u003cspan\u003e答：是的，它们同时输出，并且音量和音调同时控制。\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp data-end=\"819\" data-start=\"628\"\u003e\u003cspan\u003e问：高通滤波器在 RCA 输入模式下是否有效？\u003c\/span\u003e\u003cbr data-end=\"684\" data-start=\"681\"\u003e\u003cspan\u003e答：不可以。高通滤波器仅在唱机输入模式下可用。\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp data-end=\"1023\" data-start=\"826\"\u003e\u003cspan\u003e问：我可以更换 P7 中的运算放大器吗？\u003c\/span\u003e\u003cbr data-end=\"865\" data-start=\"862\"\u003e\u003cspan\u003e答：是的，P7 具有 3 个可插拔 NE5532 运算放大器，可以用其他双运算放大器替换，例如 2604、2134 或 MUSES02 等。内部有高压，请确保运算放大器在开机前已正确安装。\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp data-end=\"1230\" data-start=\"1030\"\u003e\u003cspan\u003e问：我可以更换 P7 中的管子吗？\u003c\/span\u003e\u003cbr data-end=\"1074\" data-start=\"1071\"\u003e\u003cspan\u003e答：是的，P7 支持更换 PSVANE 12AX7-S、曙光 12AX7B、7025 或 12AX7 电子管。请在关机状态下更换电子管。\u003c\/span\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan\u003e参数\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e品牌：Douk Audio\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e型号：P7\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e音频输入：MM Phono\/RCA\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e音频输出：RCA\/XLR\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e输入灵敏度：\u003c\/span\u003e\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e唱机输入：5mV\u003c\/span\u003e\u003c\/li\u003e\n\n \u003cli\u003e\u003cspan\u003eRCA输入：0.775V\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e额定输出电平：\u003c\/span\u003e\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e唱机输入：RCA输出：0.5V \/ XLR输出：1V\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003eRCA输入：RCA输出：2V \/ XLR输出：4V\u003c\/span\u003e\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e总谐波失真+噪音：\u003c\/span\u003e\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003eRCA输入：0.1%\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e唱机输入：0.03%\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e信噪比：\u003c\/span\u003e\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003eRCA输入：≥109dB\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e唱机输入：≥82dB\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e频率响应：\u003c\/span\u003e\n\u003cul\u003e\n\n\u003cli\u003e \u003cspan\u003eRCA输入：20Hz-20KHz（±0.8dB）\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e唱机输入：符合 RIAA 特性\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e高音\/低音范围：±6dB\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e高通滤波器截止频率：20Hz\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e输入电压：DC 12V≥2A（5.5*2.1mm）\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e尺寸（宽*深*高）：155*124*42毫米\/6.10*4.88*1.65英寸\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e包装尺寸（宽*深*高）：310*240*70毫米\/12.20*9.41*2.75英寸\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e净重：707克\/1.56磅\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e包装重量：1.10千克\/2.43磅\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan\u003e包装清单\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e1* P7 前置放大器\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e2* PSVANE ECC83 电子管\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e1* DC 12V 电源适配器\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e1*用户手册\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"我们","offer_id":47529524887784,"sku":"SUC-P7-US","price":109.99,"currency_code":"USD","in_stock":true},{"title":"英国","offer_id":47529524920552,"sku":"SUC-P7-UK","price":109.99,"currency_code":"USD","in_stock":true},{"title":"欧盟","offer_id":47529524953320,"sku":"SUC-P7-DE","price":109.99,"currency_code":"USD","in_stock":true},{"title":"非盟","offer_id":47529524986088,"sku":"SUC-P7-AU","price":109.99,"currency_code":"USD","in_stock":true},{"title":"其他","offer_id":47529525018856,"sku":"SUC-P7","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/0_8d27117d-877a-45e7-94ed-88ebb21b5c09.jpg?v=1753683974"},{"product_id":"douk-audio-4-way-audio-switcher-splitter-5-band-stereo-eq-preamp","title":"Douk Audio D5 4路音频切换器\/分配器，带均衡器前置放大器","description":"\u003cdiv\u003e\u003cspan\u003e特征\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e1 进 4 出灵活分配器：轻松连接多达四个放大器或有源扬声器等。选择任意输出组合同时工作，轻松进行比较或多设备收听\u003c\/span\u003e\u003cspan\u003e，为您的家庭音频设置提供无与伦比的灵活性。\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e四进一出音频切换器：\u003c\/span\u003e\u003cspan\u003e轻松切换四种不同的音频源，例如手机、平板电脑或播放器。告别频繁插拔的烦恼，快速比较多个音频源。是需要无缝切换的用户的理想之选。\u003c\/span\u003e \n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\n\u003cli data-end=\"359\" data-start=\"66\"\u003e\n\n\u003cp data-end=\"359\" data-start=\"69\"\u003e\u003cspan\u003e带 EQ 旁路功能的 5 频段均衡器：可精确调节 80Hz、330Hz、1KHz、3.3KHz 和 10KHz 的频率，从而微调您的音效。或者，切换到 EQ 旁路模式，即可将未经修改的直接信号传输至扬声器或耳机，让您完全掌控音效。\u003c\/span\u003e\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n \u003cli\u003e\u003cspan\u003e复古风格音量表：配备大型模拟音量表，配备 6 级背光和增益调节，提供音乐动态的实时视觉反馈。采用紧凑的金属外壳，兼具复古魅力和持久耐用性。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\n\u003cli data-end=\"359\" data-start=\"66\"\u003e\u003cspan\u003e个人聆听的耳机放大器：D5 还可兼作耳机放大器，为个人聆听提供出色性能。通过耳机聆听饱满细腻的音频，精准清晰地提升每个音符的音质。\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv\u003e\n\n\u003chr\u003e\n\n\u003cstrong data-end=\"75\" data-start=\"26\"\u003e问：D5 附带电源吗？\u003c\/strong\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cstrong data-end=\"84\" data-start=\"78\"\u003e答：\u003c\/strong\u003e\u003cspan\u003e是的。为了获得最佳性能，请使用随附的 DC 5V\/2A 电源适配器。如果使用\u003c\/span\u003e\u003cspan\u003e其他\u003c\/span\u003e\u003cspan\u003e电源，请确保其至少提供 2A 电流。否则，D5 可能无法正常工作。\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cp data-end=\"473\" data-start=\"282\"\u003e\u003cstrong data-end=\"354\" data-start=\"282\"\u003e问：1进4出模式下，四个通道可以同时输出吗？\u003c\/strong\u003e \u003cbr data-end=\"357\" data-start=\"354\"\u003e\u003cstrong data-end=\"363\" data-start=\"357\"\u003e一个：\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e是的，在“1-IN-4-OUT”模式下，所有四个通道可以同时输出，其中 D5 充当音频分配器。\u003c\/p\u003e\n\n\u003cp data-end=\"666\" data-start=\"480\"\u003e\u003cstrong data-end=\"511\" data-start=\"480\"\u003e问：我可以将 D5 用作 4 进 1 出混音器吗？\u003c\/strong\u003e\u003cbr data-end=\"514\" data-start=\"511\"\u003e\u003cstrong data-end=\"520\" data-start=\"514\"\u003e一个：\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eD5 不支持每个通道的单独音量控制，因此不推荐用作混音器。不过，它作为切换器效果很好。\u003c\/p\u003e\n\n\u003cp data-end=\"885\" data-start=\"673\"\u003e\u003cstrong data-end=\"728\" data-start=\"673\"\u003e问：为什么连接RCA I\/O端口后没有声音？\u003c\/strong\u003e\u003cbr data-end=\"731\" data-start=\"728\"\u003e\u003cstrong data-end=\"737\" data-start=\"731\"\u003e一个：\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e3.5mm 优先接口优先于 RCA I\/O 端口。如需使用 RCA I\/O 端口，请确保优先接口未连接。\u003c\/p\u003e\n\n\u003cp data-end=\"1104\" data-start=\"892\"\u003e\u003cstrong data-end=\"930\" data-start=\"892\"\u003e问：机器运转时有噪音，怎么办？\u003c\/strong\u003e \u003cbr data-end=\"933\" data-start=\"930\"\u003e\u003cstrong data-end=\"939\" data-start=\"933\"\u003e一个：\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e如果出现明显的噪音，请尝试切换后面板上的 GND 开关。打开或关闭该开关可以解决大多数接地环路问题，但我们不能保证 100% 有效。\u003c\/p\u003e\n\n\u003cp data-end=\"1304\" data-start=\"1111\"\u003e\u003cstrong data-end=\"1164\" data-start=\"1111\"\u003e问：EQ 旁路模式下可以控制音量吗？\u003c\/strong\u003e\u003cbr data-end=\"1167\" data-start=\"1164\"\u003e\u003cstrong data-end=\"1173\" data-start=\"1167\"\u003e一个：\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e是的，音量控制在 EQ 旁路模式下仍然可用。\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan\u003e参数\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e品牌：Nobsound\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e型号：D5\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e音频输入：3组RCA\/1*3.5mm AUX\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e音频输出：3组RCA\/1*3.5mm Jack\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e工作模式：一进四出\/四进一出\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e4通道同时输出：支持\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e频率调节：80Hz\/330Hz\/1KHz\/3.3KHz\/10KHz\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003eEQ调节范围：±10dB\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003eEQ旁路模式：支持\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e输入阻抗：50KΩ\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e输出阻抗：10Ω\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e频率响应：20Hz-20KHz\u003c\/span\u003e\u003c\/li\u003e\n\n \u003cli\u003e\u003cspan\u003e匹配耳机阻抗：32-200Ω\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e耳机输出功率：150mW@32Ω\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e \u003cspan\u003eVU表背光亮度调节：6级\u003c\/span\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003eVU表摆动范围调节：支持\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e工作电压：DC 5V\/≥2A\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e尺寸（宽*深*高）：130*80*104毫米\/5.12*3.15*4.09英寸\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e包装尺寸（宽*深*高）：210*185*100mm \/ 8.27*7.28*3.94英寸\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e净重：685克\/1.51磅\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e包装重量：1.0kg\/2.20lb\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\n\u003cdiv\u003e\u003cspan\u003e包装清单\u003c\/span\u003e\u003c\/div\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e1* D5 音频选择器\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan\u003e1* DC 5V 电源适配器\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e1* Type-C 数据线\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e1* 螺丝刀\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e1*用户手册\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"我们","offer_id":47544764956904,"sku":"XX-D5-US","price":109.99,"currency_code":"USD","in_stock":true},{"title":"英国","offer_id":47544764989672,"sku":"XX-D5-UK","price":109.99,"currency_code":"USD","in_stock":true},{"title":"欧盟","offer_id":47544765022440,"sku":"XX-D5-DE","price":109.99,"currency_code":"USD","in_stock":true},{"title":"非盟","offer_id":47544765055208,"sku":"XX-D5-AU","price":109.99,"currency_code":"USD","in_stock":true},{"title":"其他","offer_id":47544765087976,"sku":"XX-D5","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/000_9c3c3306-8756-46a7-b69a-f0626ce49740.jpg?v=1753953920"},{"product_id":"usb-to-spdif-converter-xmos-xu316-coaxial-optical-toslink-ddc-digital-interface","title":"Douk Audio U2 Digital Interface DDC with XMOS XU316 USB to SPDIF Converter","description":"\u003cdiv\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eLossless USB to S\/PDIF Converter: Convert USB signals from PC, laptops, phones, tablets, and Raspberry Pi etc. to optical\/coaxial outputs simultaneously with zero loss and no latency. Ideal for DACs, digital amplifiers, or home theater systems that only support S\/PDIF input.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eXMOS XU316 Chipset for Hi-Res Audio: U2 supports up to 24bit\/192kHz PCM and DSD64 (DOP) playback. Enjoy lower jitter, cleaner signals, and rich audio detail—perfect for high-end music systems and audiophiles. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003ePlug-and-Play Simplicity: No driver needed for PCM playback on Windows 10+ and macOS. Includes a dual-head Type-A\/Type-C to Type-C cable for easy connection, fully OTG-ready for phones and instantly usable. \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eReal-Time Format Indicators:\u003c\/span\u003e\u003cspan\u003e The built-in sampling rate indicator clearly displays PCM\/DSD status and sampling rate, letting you instantly verify your audio format for accurate, bit-perfect playback and peace of mind.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eCompact Design for Seamless Integration: Despite its powerful digital processing, the U2 features a lightweight and space-saving design. Ideal for HiFi desktop audio systems where space and performance both matter.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eSystem Driver Requirements\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eFor Windows 10 and Above: Driver-free for PCM; Requires driver for DSD \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eFor MacOS: Driver-free\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eFor Win 7\/8: Requires driver for PCM\/DSD\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eFor Android: Driver-free\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eFor iOS: Driver-free\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eFor Linux: Driver-free \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eWarm tips\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e1.The U2 supports OTG and comes with an OTG-compatible USB cable for direct connection to OTG-enabled phones. For iPhones or iPads with a Lightning port, a high-current camera kit is required. Newer models with a Type-C port can use the included cable directly. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e2.The U2 only supports 2.0 channel stereo audio. Multichannel formats such as 5.1, 7.1, or Dolby formats are not supported. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e3.Please install the required driver and files from the included USB drive, and follow the instructions or video guide to set up your player properly.  \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eParameters\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Douk Audio\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: U2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio input: USB Type-C\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio output: Coaxial\/Optical\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUSB chip: XMOS XU316\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMax. sampling rate supported:\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003ePCM：44.1kHz-192kHz\/16Bit-24Bit\u003c\/div\u003e\n\u003cdiv\u003eDSD：DOP DSD64\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eOperation systems PC-USB supported:\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003eW10\/W11\/Mac OS\/Android\/iOS\u003c\/div\u003e\n\u003cdiv\u003eWin7\/Win8\/Linux (Cannot guarantee 100% compatible)\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eTHD+N: 0.000008%\u003c\/li\u003e\n\u003cli\u003eWorking voltage: DC 5V\u003c\/li\u003e\n\u003cli\u003eDimensions (W*D*H): 40*52*20mm \/ 1.57*2.05*0.79in\u003c\/li\u003e\n\u003cli\u003ePackage dimensions (W*D*H): 170*120*50mm \/ 6.69*4.72*1.97in\u003c\/li\u003e\n\u003cli\u003eNet weight: 45g \/ 0.1lb\u003c\/li\u003e\n\u003cli\u003ePackage weight: 170g \/ 0.37lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003ePacking list\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1* U2 Digital Interface\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Optical Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* USB-C to USB-A\/USB-C Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47632503963880,"sku":"SUC-U2-US","price":56.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47632503996648,"sku":"SUC-U2-UK","price":56.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47632504029416,"sku":"SUC-U2-DE","price":56.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47632504062184,"sku":"SUC-U2-AU","price":56.99,"currency_code":"USD","in_stock":true},{"title":"Other","offer_id":47632504094952,"sku":"SUC-U2","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_1_704745f1-09c9-46a3-9678-2a92b18817cc.jpg?v=1756342686"},{"product_id":"douk-audio-q100-ak4499-ak4191-fully-balanced-desktop-dac-dsd512","title":"Douk Audio Q100 AK4499+AK4191 Fully Balanced Desktop DAC DSD512","description":"\u003cdiv\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFlagship DAC for Audiophiles: Featuring the premium AK4499EX + AK4191 DAC chips, aided by XU316 and QCC5125, Q100 unlocks high-resolution music in stunning detail. Supports up to PCM 768kHz\/32bit and DSD512 for an uncompromised listening experience.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eVersatile Inputs for Any Digital Source: Supports USB-C, AES, Optical, Coaxial, and Bluetooth 5.1 with LDAC, aptX-HD support. Whether you’re connecting a PC, music streamer, CD player, TV, or phone, Q100 adapts to your audio setup with unmatched clarity and compatibility.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBalanced Output for Pure HiFi Sound: Offers both balanced XLR and single-ended RCA outputs, ensuring precise stereo imaging and dynamic performance. Enjoy every detail with SNR≥124dB and THD+N at 0.0002%, built for demanding audiophiles seeking ultra-transparent sound.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eUAC Switch for Ultimate Flexibility: Enjoy broad USB compatibility. UAC1.0 ensures plug-and-play with PS5, Switch, and legacy systems; UAC2.0 unlocks high-res playback for uncompromised audio. Ideal for gaming, music, and professional use.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eUser-Centric Design with Smart Controls: Includes diverse filter modes to fine-tune sound texture and detail, 12V trigger for synchronized power on\/off, OLED screen displaying real-time status, Bluetooth reset and full remote control. A truly refined desktop DAC with thoughtful usability.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eQ: Which systems require driver installation?\u003cbr\u003eA: UAC1.0: Driver-free on all systems.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e     UAC2.0: Windows 7\/8 require drivers. Windows 10\/11 are driver-free for PCM, but need drivers for DSD. MacOS and Linux are driver-free.  \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eQ: Q100 can't work with my phone via USB, is a driver required?\u003cbr\u003eA: No, it's drive-free. Please use the supplied OTG-compatible USB cable and ensure the phone support OTG. On some phones, you may need to enable OTG in settings. For iPhones\/iPads with a Lightning port, a high-current camera kit is required.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eQ: Do the XLR and RCA outputs work simultaneously, and is the volume synchronized?\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA: Yes, both outputs work at the same time, with volume control applied to both simultaneously.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan\u003eQ: What op-amps are used, and can they be replaced?\u003cbr data-end=\"86\" data-start=\"83\"\u003eA: The Q100 uses five OPA1612 surface-mount op-amps, which are soldered directly onto the board and cannot be replaced or swapped out. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eQ: Which functions can only be controlled via the remote control?\u003cbr data-end=\"1206\" data-start=\"1203\"\u003eA: Only clearing Bluetooth pairing and UAC1.0\/2.0 switching must require the remote; all other functions can be operated from the panel.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eQ: Does switching UAC mode require restarting the Q100?\u003c\/div\u003e\n\u003cdiv\u003eA:\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eUsually no restart is required. For a small number of computers the USB cable may need to be reconnected.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eQ: Does the remote control come with batteries?\u003cbr\u003eA: For safer and faster delivery, the remote control may not include batteries (AAA*2). Please prepare batteries yourself.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eParameters\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Douk Audio\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: Q100\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio input: Bluetooth 5.1\/USB-C\/Coaxial\/Optical\/AES\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio output: XLR\/RCA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eChipset: AK4499+AK4191+QCC5125+XU316+OPA1612\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBluetooth supported codecs: SBC\/AAC\/aptX\/aptX-HD\/LDAC\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMax sampling rate supported:\u003cbr\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eUSB input: PCM 768kHz\/32bit, DSD512 (native), DSD256 (DoP)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCoaxial\/Optical input: PCM 192kHz\/24bit, DSD64 (DoP)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAES input: 192kHz\/24bit\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency response: 20Hz-20KHz (±0.1dB)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSNR: ≥124dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTHD+N: 0.0002%@1kHz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMax output level: RCA:2.3V; XLR:4.5V\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUSB compatible operating systems: Windows 7\/8\/10\/11, macOS, Linux, Android, iOS \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eFilter modes: \u003c\/span\u003e\u003cspan\u003ePCM:6 modes, \u003c\/span\u003e\u003cspan\u003eDSD:2 modes\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBrightness of display screen: 10-100%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eScreen display time: 15s\/30s\/solid on\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWorking voltage: Adaptive AC 100-130V \/ 200-240V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions (W*D*H): 228*170*46mm \/ 8.98*6.69*1.81in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage dimensions (W*D*H): 400*230*80mm \/ 15.74*9.05*3.15in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNet weight: 1.73kg \/ 3.81lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage weight: 3.0kg \/ 6.611b\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003ePacking List\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1* Q100 DAC\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Bluetooth Antenna\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Remote Control\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Power Cord\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* USB-A\/C to USB-C Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Optical Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47679411486952,"sku":"SUC-Q100-US","price":499.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47679411519720,"sku":"SUC-Q100-UK","price":549.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47679411552488,"sku":"SUC-Q100-DE","price":499.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47679411585256,"sku":"SUC-Q100-AU","price":549.99,"currency_code":"USD","in_stock":true},{"title":"China","offer_id":47679411618024,"sku":"SUC-Q100","price":549.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_ad01d96f-c045-4acf-bd3f-2b8fc2dd8241.jpg?v=1757923630"},{"product_id":"ampapa-d1-hifi-bluetooth-amplifier-with-digital-vu-meters-hpf","title":"Ampapa D1 HIFI TPA3255 Amplifier with Digital VU Meter","description":"\u003cdiv\u003e\n\u003cspan\u003eFeatures\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eAmpapa × Douk Audio Collaboration: Built on the acclaimed Douk Audio A5 amp, the D1 retains core features like TPA3255 chip, HPF, PRE-OUT, socketed op-amps—now upgraded with digital VU display, TRS balanced input, Bluetooth 5.2, treble\/bass control, remote and more for next-gen HiFi performance.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDigital VU Meters with Retro Soul: D1 features a vibrant OLED screen that merges classic aesthetics with modern utility. Enjoy 7 VU styles in classic yellow, blue, or black and view real-time feedback of all operations and playback. Both stylish and functional, it brings your music to life.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eEngineered for True 2.1 Systems: The adjustable 30–200Hz high-pass filter removes low frequencies from the main output, letting your stereo speakers focus on mids and highs with better clarity, while PRE-OUT offers full-range signal to active subwoofers, amplifiers, or active speakers.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePremium Components for Superior Fidelity: Pluggable NE5532 op-amps allow for effortless upgrades through the top glass panel for long-term flexibility. From NJW1194 chip, SAGAMI inductors, 2oz copper PCB to GaN 48V\/5A power adapter, every element is chosen for sonic purity. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eEngineered for Everyday Convenience: With a 12V trigger, infrared remote, one-touch mute and Bluetooth reset, D1 simplifies your daily audio setup. Fine-tune your sound with ±10dB tone control, while internal RGB lighting adds a refined, modern glow. Enjoy seamless operation from start to finish.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eQ: Can I replace the op-amps in the D1？\u003cbr\u003eA:Yes, the D1 uses 2PCs pluggable NE5532 op-amps,which can be replaced by normal dual op-amps like 2604\/2134\/muses02 etc. Before replacing, please turn off the power, ensure correct orientation, and power ononly after confirming proper installation.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eQ: Why don't the single VU meter and spectrum display work properly?\u003cbr\u003eA: In dual VU meter mode, both meters show the audio levels for the left and right channels separately.In single VU meter and spectrum modes, the D1 only detects the left channel input. If only the right channel is connected, the VU meter and spectrum display will not operate.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eQ: Does the high-pass filter affect the Pre-Out signal?\u003cbr\u003eA:No,the high-passfilteronly applies to the speaker output. The Pre-Out delivers a full-range signal.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eQ: Are the Pre-Out's volume and tone controls synchronized with the speaker output?\u003cbr\u003eA: Yes.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eQ: Is it normal for the D1 to become hot during operation?\u003cbr\u003eA: The D1's TPA3255 amp chip dissipates heat through contact with the chassis. It is normal for the chassis to heat up during operation. This does not affect performance or lifespan of the D1. Please place the D1 in a well-ventilated area,and avoid stacking devices or blocking ventilation.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003eQ: What should I use the 12V trigger input for?\u003cbr\u003eA: The 12V trigger input is designed for use with preamps or DACs that have a trigger output to achieve synchronous power on and off. Please do not use this port as an audio input or connect it to a power supply, as this could damage the D1.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eQ: What is the required power supply for the D1?\u003cbr\u003eA:The D1 requires a DC 24-48V (≥4A) input voltage. Please use the supplied power adapter for optimal performance. lf using a third-party power supply,ensure it meets the required voltage and current specifications.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eQ: Why doesn't the remote control include batteries?\u003cbr\u003eA:For safer and faster delivery, the remote control may not include batteries (AAA*2). Please prepare them yourself.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eParameters\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Ampapa\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: D1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio input: RCA\/TRS\/Bluetooth 5.2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio output: Banana speaker jacks \/ Pre-Out\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMax. output power: 300W*2 (4Ω）\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTHD+N: 0.002%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSNR: ≥114dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency response: 20Hz-20KHz (±0.4dB)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigh-pass filter frequency range: 30Hz-200Hz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigh-pass fiter roll-off: 12dB per octave\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBluetooth chip: QCC304X\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBluetooth supported codecs: SBC\/AAC\/aptX\/aptX-HD\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInput sensitivity: RCA: 2V  TRS: 4V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePre-out rated output level: 3.5V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMatched speaker impedance: 4-8Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTreble\/bass range: ±10dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInput voltage: DC 24-48V\/ ≥4A (5.5*2.5mm)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions (W*D*H): 155*124*42mm \/ 6.10*4.88*1.65in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage dimensions (W*D*H): 268*192*95mm \/ 10.55*7.56*3.74in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNet weight: 742g \/ 1.64lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePackage weight: 1.73kg \/ 3.81lb\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003ePower Output Table of the D1\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003ePower Supply\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSpeaker Impedance\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eOutput Power\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd rowspan=\"3\"\u003e\u003cspan\u003e48V\/5A\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4Ω\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e120W+120W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e6Ω\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e110W+110W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e8Ω\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e102W+102W\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003ePacking List\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1* D1 Amp\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* DC 48V5A GaN Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Remote Control\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Bluetooth Antenna\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Cleaning Cloth\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Certificate\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e1* Warranty\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47672444551400,"sku":"SUC-D1-US","price":199.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47672444584168,"sku":"SUC-D1-UK","price":199.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47672444616936,"sku":"SUC-D1-DE","price":199.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47672444649704,"sku":"SUC-D1-AU","price":199.99,"currency_code":"USD","in_stock":true},{"title":"China","offer_id":47672444682472,"sku":"SUC-D1","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_89339c36-f90f-499f-90b7-0be0d92e6ffc.jpg?v=1757470299"},{"product_id":"ampapa-q1","title":"Ampapa Q1 HIFI ESS9039+AK4493 Desktop DAC [Based on DAC-Q11]","description":"\u003cdiv\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eNext-Gen DAC Performance: A fully upgraded successor to the Douk Audio DAC-Q11, the Q1 retains its signature dual-DAC design while improving every core spec with cutting-edge ESS9039, AK4493, XMOS XU316, Bluetooth 5.2 and vivid OLED display. High-res support up to PCM 768kHz\/32bit and DSD512 delivers studio-level clarity.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDual DAC Architecture: Easily switch between ESS9039 for clean, analytical sound or AK4493 for smoother musicality. Assign your preferred DAC chip and filter mode to each LINE and headphone output, tailoring sound to different genres, gear, or moods. SINAD ≥113dB, THD+N as low as 0.0002%, ensuring clean, distortion-free audio.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eExpressive Display with Style: The screen clearly shows input mode, DAC chip assignment, USB driver mode, and volume—everything you need at a glance. Q1 also offers 11 unique display modes, including diverse retro-style VU meters, audio spectrum, spinning vinyl, and cassette-style reels, each adding visual character to your HiFi setup.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eInput and Output Versatility: Supports USB-C with UAC 1.0\/2.0 modes for wider compatibility, including gaming consoles, plus Bluetooth with aptX\/aptX-HD, coaxial, and optical inputs. Q1 has 2xRCA and 2xbalanced TRS outputs, powering up to four amps or active speakers at once. A 3.5mm headphone jack offers personal listening with 1000mW output and two gain levels for optimal performance with both IEMs and high-impedance headphones.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFull Control at Your Fingertips: Customize your audio with four swappable  LME49720 op-amps, easily accessible via a top window. Q1 also features full-spectrum RGB lighting, remote control, Bluetooth reset, adjustable brightness, and 12V trigger out. Perfectly matched with the Ampapa D1 for a cohesive stack both visually and functionally.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eQ: What operating systems are compatible with the Q1’s USB connection, and do I need to install a driver?\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e Q1 \u003c\/span\u003e\u003cspan\u003esupports\u003c\/span\u003e\u003cspan\u003e Windows 10\/11, macOS, Android, iOS, and audio-focused Linux (e.g. Volumio, ROON). USB connection with phones requires OTG support. No drivers \u003c\/span\u003e\u003cspan\u003eneeded\u003c\/span\u003e\u003cspan\u003e for mobile devices, macOs, or Linux. Windows needs a driver only in UAC 2.0 mode.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003cstrong data-end=\"639\" data-start=\"581\"\u003eQ: Can I remove the mesh layer on the Q1’s top window?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr data-end=\"642\" data-start=\"639\"\u003e\u003cspan\u003e\u003cstrong data-end=\"650\" data-start=\"644\"\u003eA:\u003c\/strong\u003e No. It’s a built-in EMI shield to prevent signal interference. Please do not remove it, and keep phones or routers away from the Q1.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003cstrong data-end=\"590\" data-start=\"543\"\u003eQ: Can I replace the op-amps in the Q1?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr data-end=\"593\" data-start=\"590\"\u003e\u003cspan\u003e\u003cstrong data-end=\"599\" data-start=\"593\"\u003eA:\u003c\/strong\u003e Yes, the Q1 uses 4PCs pluggable  LME49720 op-amps, which can be replaced by standard dual op-amps like 2604\/2134\/muses02 etc. \u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003cstrong data-end=\"814\" data-start=\"748\"\u003eQ: Why don't the single VU meter and spectrum display work properly?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr data-end=\"817\" data-start=\"814\"\u003e\u003cspan\u003e\u003cstrong data-end=\"823\" data-start=\"817\"\u003eA:\u003c\/strong\u003e In single VU meter and spectrum modes, the Q1 only detects the left channel input. If only the right channel is connected, the VU meter and spectrum display will not operate. \u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003cstrong\u003eQ: Why can't I find Q1 in my Bluetooth list?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr data-end=\"507\" data-start=\"504\"\u003e\u003cspan\u003e\u003cstrong\u003eA: \u003c\/strong\u003eMake sure Q1 is set to Bluetooth mode, then turn on Bluetooth on your phone and search for \"AMPAPA Q1\" to connect. If Q1 still doesn't appear, try clearing previous connections using the remote control.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003cstrong data-end=\"596\" data-start=\"523\"\u003eQ: Why do the vinyl and tape-style displays spin at a constant speed?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr data-end=\"599\" data-start=\"596\"\u003e\u003cspan\u003e\u003cstrong data-end=\"605\" data-start=\"599\"\u003eA:\u003c\/strong\u003e These two display modes don’t react to audio signals, so they simply maintain a constant rotation speed. Even if the music is paused,the rotation continues as long as the mode is engaged. \u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003cstrong\u003eQ: Why does the VU meter show a large deflection at low volume, but a smaller deflection at high volume? \u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e The Q1 features an automatic gain control system (AGC) for the VU meters. \u003c\/span\u003e\u003cspan\u003eWhen the input signal is low, the system switches to high gain; when the \u003c\/span\u003e\u003cspan\u003esignal is high, it switches to low gain. This ensures the VU meters maintain \u003c\/span\u003e\u003cspan\u003esufficient deflection across different volume levels.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan\u003e\u003cstrong\u003eQ: Does the remote control include batteries?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eA: \u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003eFor safer and faster delivery, the remote control may not include batteries (AAA*2). Please prepare them yourself.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eParameters\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Ampapa\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: Q1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio input: Bluetooth 5.2 \/ USB-C \/ Coaxial \/ Optical\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio output: 2 sets of RCA \/ 2 sets of balanced TRS \/ 3.5mm headphone jack\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eChipset: ESS9039Q2M+AK4493+XMOS XU316+QCC304X+ LME49720\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMax. sampling rate supported:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePC-USB: PCM 768KHz\/32bit, DSD(Native) 512, DSD(DoP) 256\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCoaxial \/ Optical: PCM 192KHz\/24bit, DSD(DoP) 64\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBluetooth 5.2: 48KHz\/24Bit\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUSB supported operating systems: W10\/W11\/macOs\/Linux\/Android\/iOS\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBluetooth supported codecs: SBC\/aptX\/aptX-HD\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency response: 20Hz-20kHz (±0.2dB)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTHD+N: 0.0002%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSNR: ≥120dB\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMax. output level: RCA: 2V   TRS: 4V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eMax. headphone output power\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eHigh gain: 1000mW@32Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLow gain: 380mW@32Ω \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMatched headphone impedance: 16-600Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInput sensitivity: 0dBFS\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUSB driver mode: UAC 1.0\/2.0\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRemote control: Supported\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eScreen display: 11 VU modes +1 working status mode\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBacklight brightness: 10-level adjustment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLED color: Infinite RGB color combinations\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWorking voltage: DC 12V (5.5*2.1mm)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions (W*D*H): 155*124*42mm \/ 6.10*4.88*1.65in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage Dimensions (W*D*H): 300*230*70mm \/ 11.81*9.05*2.75in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNet weight: 643g \/ 1.42lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage weight: 1.2kg \/ 2.64lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003ePacking List\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1* Q1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* DC 12V Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Bluetooth Antenna\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* USB-C to USB-A\/USB-C Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Optical Fiber Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* 3.5mm Trigger Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Remote Control (without battery)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Cleaning Cloth\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Certificate\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Warranty\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cread-frog-selection class=\"notranslate\" style=\"overflow: visible; position: relative; width: 0px; height: 0px; display: block;\"\u003e\u003c\/read-frog-selection\u003e\u003c\/p\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":47772093776104,"sku":"SUC-Q1-US","price":269.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":47772093808872,"sku":"SUC-Q1-UK","price":269.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":47772093841640,"sku":"SUC-Q1-DE","price":269.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":47772093874408,"sku":"SUC-Q1-AU","price":269.99,"currency_code":"USD","in_stock":true},{"title":"China","offer_id":47772093907176,"sku":"SUC-Q1","price":269.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/00_c6fd70eb-f526-4dea-8fcf-ae28df9f4a60.jpg?v=1764921914"},{"product_id":"nobsound-ns-02g-pro","title":"Nobsound NS-02G PRO HiFi Single-Ended Class A Stereo Amplifier","description":"\u003cdiv\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eWarm and Natural Sound: Built on a single-ended Class A topology, the NS-02G PRO delivers low-distortion output with natural warmth and realism in vocals and instruments. Its smooth, immersive soundstage is perfect for long listening sessions in cozy setups or dedicated HiFi spaces.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFully Symmetrical Circuit: The fully symmetrical amplifier circuit reduces phase distortion and maintains signal integrity throughout the frequency range. This ensures cleaner output, improved imaging, and greater musical nuance, especially in acoustic and vocal-rich recordings.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePowerful Enough for Most Speakers: With RMS output up to 30Wx2 (8Ω) \/ 42Wx2 (4Ω) in Class A operation, it can effortlessly drive most bookshelf and floor-standing speakers. Enjoy full-bodied sound with punchy bass and detailed mids, whether you're spinning vinyl, streaming, or playing CDs. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eAudiophile Components: With Toshiba 2SA1943\/5200 transistors, 150W copper toroidal transformer, ALPS potentiometer, and 40,000μF capacitors, it ensures stable current, deeper bass, and wider soundstage. Gold-plated RCA jacks preserve purity and pluggable op-amps allow higher playability.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFlexible Inputs and Safety Protection: Dual RCA inputs with an input switch support quick source switching and comparing without plugging and unplugging cables. Built-in protection systems like DC protection, surge-protected delay, and overheat protection, keep both your amp and speakers safe.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eQ: How can I replace the op-amps?\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The swappable NE5532 op-amps are located beneath a relay module. You’ll need to remove a few screws to access and replace them. Please proceed carefully or contact us if unsure.  \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eParameters\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Nobsound\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: NS-02G PRO\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio input: 2 groups of RCA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio output: Banana speaker jacks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOutput power (RMS): 30W*2@8Ω; 42W*2@4Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFrequency response: 30Hz-20kHz  \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTHD: ≤1%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSNR: ≥86dB (A-weighted)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRating input level: 500mV\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRating load impedance: 4Ω\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePower consumption: ≤120W\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInput voltage: AC 100-120V \/ 220-240V, 50\/60Hz\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions (W*D*H): 457*310*140mm \/ 12.99*8.27*2.76in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNet weight: 5.6kg \/ 12.35lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage weight: 6.5kg \/ 14.33lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003ePacking list\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1* NS-02G PRO\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Power Cord\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Instruction Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":48089374851304,"sku":"DZ113-US","price":359.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":48089374884072,"sku":"DZ113-UK","price":359.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":48089374916840,"sku":"DZ113-DE","price":359.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":48089374949608,"sku":"DZ113-AU","price":359.99,"currency_code":"USD","in_stock":true},{"title":"China","offer_id":48089374982376,"sku":"DZ113","price":359.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/DZ113_1_ef763011-4b4b-494d-a157-129b607d3ecf.jpg?v=1772163888"},{"product_id":"douk-audio-d2-15w-hifi-linear-power-supply-with-dc-usb-5v-output","title":"Douk Audio D2 15W HiFi Linear Power Supply with DC+USB 5V Output","description":"\u003cdiv\u003e\u003cstrong\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"8\"\u003e\u003cspan\u003e\u003cstrong data-end=\"307\" data-start=\"279\"\u003eCleaner 5V Linear Power:\u003c\/strong\u003e Replaces ordinary switching power adapters with clean, stable 5V DC power. The D2 helps reduce power-related noise and interference, giving your HiFi system a darker background, smoother highs, and more natural detail.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"9\"\u003e\u003cspan\u003e\u003cstrong\u003eUltra-Low Ripple Output\u003c\/strong\u003e: With ripple noise below 20μV under no-load conditions, 15W output power, and up to 2.5A current, the D2 provides a low-noise power foundation for sensitive audio circuits that require stable 5V supply.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong data-end=\"581\" data-start=\"553\"\u003eDual Output Convenience\u003c\/strong\u003e: Equipped with 1×USB-A and 1×DC output, the D2 can power two compatible 5V devices at the same time. Ideal for DACs, DDCs, Raspberry Pi, USB audio devices, and headphone amps etc.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"10\"\u003e\u003cspan\u003e\u003cstrong\u003eStable Power Architecture\u003c\/strong\u003e: Built with a custom sealed transformer, LM1085IT voltage regulator, Panasonic FM capacitors, and PTC resettable fuse. The design helps deliver steady 5V output, low-ripple DC power, and added circuit protection.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-path-to-node=\"12\"\u003e\u003cspan\u003e\u003cstrong\u003eCompact Aluminum Chassis\u003c\/strong\u003e: The CNC-machined aluminum chassis offers solid durability, better heat dissipation, and helps reduce external interference. Compact and stack-friendly, the D2 fits neatly into desktop HiFi, PC audio, and small home audio systems.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: The D2 has two output terminals. Can both terminals be used simultaneously at full rated current?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA: No. You can connect two output devices at the same time, but the total current drawn from both outputs must not exceed the rated output current.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: The DC output jack is 5.5mm\/2.5mm, and my device's power jack is 5.5mm\/2.1mm. Are they compatible?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA: Yes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: Is the output voltage of the D2 adjustable?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA: The output voltage is typically fixed and can only be fine-tuned within about ±0.5V. Normally no adjustment is required.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: If I connect two devices to the D2 at the same time, will ground noise occur?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA: It depends on the connected devices. If ground noise occurs when powering two devices, we recommend using the D2 to power only one device. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: My device requires a 5V \/ 1A power supply. Can I safely use the D2 5V \/ 2.5A output?  \u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA: Yes. 2.5A is the maximum available current. Your device will only draw the current it needs, so it can be used safely.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eQ: Why do the D2 generate more heat than switching power supplies? Is it safe?\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eA: It is normal. Linear power supplies operate at lower efficiency, so more energy is converted into heat. The D2 is safe when used within rated load limits.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan\u003eParameters\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Douk Audio\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: D2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOutput Interface: DC \/ USB Port\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOutput Voltage: DC 5V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOutput Power: 15W\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRated Output Current: 2.5A\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRipple Noise: No load \u0026lt;20μV\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDC Output Connector: 5.5 × 2.5 mm, positive inside and negative outside, compatible with 5.5 × 2.1 mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInput Voltage: AC 110V–120V \/ AC 220V–240V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions (W × D × H): 125 × 80 × 40 mm \/ 4.92 × 3.15 × 1.57 in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNet Weight: 600 g \/ 1.32 lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage Weight: 900 g \/ 1.98 lb \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan\u003ePacking List\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1* D2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* DC Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Power Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":48560181608680,"sku":"LHY-D2-US","price":89.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":48560181641448,"sku":"LHY-D2-UK","price":89.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":48560181674216,"sku":"LHY-D2-DE","price":89.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":48560181706984,"sku":"LHY-D2-AU","price":89.99,"currency_code":"USD","in_stock":true},{"title":"China","offer_id":48560181739752,"sku":"LHY-D2","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/9_d5a62d27-aaa6-4c48-82c1-dcad714890e8.jpg?v=1778824457"},{"product_id":"douk-audio-t12-hifi-tube-phono-preamp-for-mm-mc-turntables-headphone-amp-with-vu-meter","title":"Douk Audio T12 Tube Phono Preamp MM\/MC Turntable Headphone Amp","description":"\u003cdiv\u003e\u003cspan\u003eFeatures\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli data-end=\"435\" data-start=\"194\"\u003e\u003cspan\u003eDisplay-Worthy Vintage Design: Real walnut housing, glowing tubes, and retro sliders give T12 the warm, nostalgic look of classic audio gear, turning a practical tube preamp into a refined HiFi piece that feels at home beside turntables, speakers, and records.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-end=\"662\" data-start=\"437\"\u003e\u003cspan\u003ePhono and Line-In Flexibility: Works with MM and MC turntable setups for vinyl playback, while the RCA line input connects CD players, DACs, streamers, or other analog sources, letting T12 serve as both a phono stage and tube preamp for everyday HiFi listening.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-end=\"881\" data-start=\"664\"\u003e\u003cspan\u003eBring Out the Tube Warmth: A 120V tube stage helps the 6J5B-Q tubes open up with a smoother, fuller analog tone. Along with low THD and high SNR, T12 gives vocals more body, music a warmer flow, and playback a cleaner foundation.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003eTune Sound by Sight and Touch: Bass and treble adjust up to ±10dB, with center-detent sliders for an easy return to neutral. The visible slider positions are easy to read at a glance, helping you fine-tune sound for different records, speakers, rooms, or personal taste.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-end=\"1112\" data-start=\"883\"\u003e\u003cspan\u003eOutput Switching Made Easy: Dual RCA outputs let you switch between two amplifier or powered speaker systems for quick comparison or daily listening, without the hassle of repeated unplugging. The 3.5mm headphone output makes late-night personal listening easier.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":48585375449320,"sku":"XX-T12-US","price":109.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":48585375482088,"sku":"XX-T12-UK","price":109.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":48585375514856,"sku":"XX-T12-DE","price":109.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":48585375547624,"sku":"XX-T12-AU","price":109.99,"currency_code":"USD","in_stock":true},{"title":"China","offer_id":48585375580392,"sku":"XX-T12","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/0_efd1e6c3-2780-4d30-b746-bc5b2f2f53b0.jpg?v=1779698141"},{"product_id":"douk-audio-d2-pro-dc-12v-linear-power-supply-low-noise-35w","title":"Douk Audio D2-PRO 35W Linear Power Supply with Dual DC 12V OUT","description":"\u003cdiv\u003e\u003cstrong\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli data-end=\"3038\" data-start=\"2738\" data-section-id=\"1lkp4wv\"\u003e\u003cspan\u003eCleaner Linear Power Upgrade: Ordinary switching adapters can introduce ripple, electrical noise, and interference into sensitive audio gear. As a linear power supply, the D2-PRO helps create a darker background, smoother highs, and cleaner detail for a more refined listening experience.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-end=\"3324\" data-start=\"3040\" data-section-id=\"155koxo\"\u003e\u003cspan\u003e28μV Ultra-Low Ripple: Ripple noise is measured at only 28μV RMS under no-load conditions, giving sensitive audio circuits a cleaner power foundation. By reducing power-related noise at the source, it supports steadier imaging, cleaner dynamics, and more natural detail. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-end=\"3576\" data-start=\"3326\" data-section-id=\"1m1di7a\"\u003e\u003cspan\u003eLow-Noise Power Architecture: A sealed toroidal transformer, EMI suppression circuit, high-speed rectifier, large-capacity matrix filtering, and LDO regulator work together to isolate grid interference, smooth DC output, and deliver stable, well-regulated DC power.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-end=\"3843\" data-start=\"3578\" data-section-id=\"ypninp\"\u003e\u003cspan\u003e35W Dual DC Output: With up to 35W output power and 2.5A current capacity, the D2-PRO can run one or two compatible devices from the same clean regulated source. Dual DC outputs help create a more consistent low-noise power setup for compact HiFi systems.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli data-end=\"1526\" data-start=\"1260\" data-section-id=\"xwcji6\"\u003e\u003cspan\u003eMade for HiFi Audio Systems: Designed for 12V DACs, preamps, headphone amps, streamers, digital interfaces, audio switches, and network switches. The aluminum chassis helps improve heat dissipation and reduce external interference for stable daily use.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":48612941037800,"sku":"LHY-D2-PRO-US","price":129.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":48612941070568,"sku":"LHY-D2-PRO-UK","price":149.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":48612941103336,"sku":"LHY-D2-PRO-DE","price":149.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":48612941136104,"sku":"LHY-D2-PRO-AU","price":149.99,"currency_code":"USD","in_stock":true},{"title":"China","offer_id":48612941168872,"sku":"LHY-D2-PRO","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_8e979cae-0b14-4f1c-8fca-bdb96c9de4d5.jpg?v=1780452409"},{"product_id":"douk-audio-vfd253-4-channel-audio-selector-music-spectrum-display","title":"Douk Audio VFD253-PRO 4 Channel Audio Selector Music Spectrum Display","description":"\u003cdiv\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFlexible 4-Channel RCA Routing: Works as a 1-in-4-out distributor or 4-in-1-out selector to manage your HiFi system with less cable swapping. Send one source to one, several, or all selected outputs, or switch between multiple sources with ease. Lighted buttons show the active channel at a glance.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e25-Band VFD Spectrum Visualizer: The 25×15 VFD display turns music into real-time spectrum motion with clearer frequency layers and richer visual detail. Use line-in RCA for direct signal tracking, or built-in MIC pickup to capture nearby sound for easier visual display across more setups.  \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eCustomizable Spectrum Display: Multiple modes, range selection, gain, brightness, and response tuning help the spectrum stay clear, full, and engaging across different sources and listening styles. Whether the signal is weak, the room is bright, or you prefer truer response over smoother motion, you can tune the display to look right.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDirect Isolated Signal Path: RCA input and output are directly connected without op-amp processing, keeping the audio path simple and clean. Transformer isolation separates the VFD drive circuit from the audio route, helping reduce display-related interference while preserving your original signal.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBuilt for Daily HiFi Use: The remote control gives quick access to channel selection, brightness, spectrum response, and clock settings etc. Accurate clock display adds practical desktop use, while aluminum housing and tempered glass bring a solid, refined finish to your HiFi setup. \u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv data-is-intersecting=\"true\" data-turn-id-container=\"df0ed69b-ad47-4d85-b708-7062d419f470\"\u003e\u003chr\u003e\u003c\/div\u003e\n\u003cdiv data-is-intersecting=\"true\" data-turn-id-container=\"request-6a18043f-95f8-83a9-8a9b-c12c437eb771-73\"\u003e\n\u003csection dir=\"auto\" data-turn=\"assistant\" data-scroll-anchor=\"false\" data-testid=\"conversation-turn-148\" data-turn-id-container=\"request-6a18043f-95f8-83a9-8a9b-c12c437eb771-73\" data-turn-id=\"request-6a18043f-95f8-83a9-8a9b-c12c437eb771-73\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\"\u003e\n\u003cdiv dir=\"auto\" data-turn-start-message=\"true\" data-message-model-slug=\"gpt-5-5-thinking\" data-message-id=\"c4d41c16-f844-49ae-b9be-15fe842270c9\" data-message-author-role=\"assistant\" tabindex=\"0\"\u003e\n\u003cp data-end=\"216\" data-start=\"0\"\u003e\u003cstrong\u003eQ: Can the VFD253 Pro be used as a mixer?\u003c\/strong\u003e\u003cbr data-end=\"44\" data-start=\"41\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNo. It does not provide independent volume control for each channel. It is more suitable as an audio switcher or splitter rather than a mixer.  \u003c\/p\u003e\n\u003cp data-end=\"495\" data-start=\"218\"\u003e\u003cstrong\u003eQ: What signal does the spectrum display show?\u003c\/strong\u003e\u003cbr data-end=\"267\" data-start=\"264\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe spectrum comes from the rear I\/O port. In 1-in-4-out mode, it shows the source signal. In 4-in-1-out mode, it follows the selected input. If multiple inputs are selected, it may show combined signal, but this is not recommended.  \u003c\/p\u003e\n\u003cp data-end=\"723\" data-start=\"497\"\u003e\u003cstrong\u003eQ: What is the difference between Real Display and Smooth Display?\u003c\/strong\u003e\u003cbr data-end=\"566\" data-start=\"563\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eReal Display follows signal changes more directly for a more accurate visual response. Smooth Display offers smoother, steadier movement for better viewing.\u003c\/p\u003e\n\u003cp data-end=\"991\" data-start=\"725\"\u003e\u003cstrong\u003eQ: Why does the display switch to clock mode when there is no audio signal?\u003c\/strong\u003e\u003cbr data-end=\"803\" data-start=\"800\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis is normal. If no audio signal is detected for about 5 seconds, the display can switch to clock mode. This function can be turned on or off by remote control.  \u003c\/p\u003e\n\u003cp data-end=\"1316\" data-start=\"993\"\u003e\u003cstrong\u003eQ: How should I power the VFD253 Pro?\u003c\/strong\u003e\u003cbr data-end=\"1045\" data-start=\"1042\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePlease use the included 5V USB power adapter. Do not power it from the same device used as the audio source, as shared grounding may cause background noise or hum.  \u003c\/p\u003e\n\u003cp data-end=\"1316\" data-start=\"993\"\u003e\u003cspan\u003e\u003cstrong\u003eQ: Does the remote control include batteries?\u003c\/strong\u003e\u003cbr data-end=\"95\" data-start=\"92\"\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No. Batteries are not included for safer and faster delivery. Please prepare compatible batteries separately before use.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eParameters\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eBrand: Douk Audio\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eModel: VFD253 Pro\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio Input: RCA \/ MIC Pickup\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAudio Output: RCA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOperating Modes: 1-in-4-out \/ 4-in-1-out\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDisplay Type: VFD\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDisplay Resolution: 25 × 15\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDisplay Content: Music Spectrum \/ Clock\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDisplay Modes: 7 main display modes with sub-modes\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSpectrum Range: LOW \/ MID \/ FULL\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDisplay Response: Real Display \/ Smooth Display\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdjustments: Brightness \/ Gain \/ Sensitivity \/ Peak Hold\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClock IC: RX8025T\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTime Accuracy: Within 1 minute per year\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRemote Control: Supported\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePower-Off Memory: Supported\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePower Input: DC 5V \/ ≥1A\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDimensions: 172 × 107 × 70 mm \/ 6.77 × 4.21 × 2.76 in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage Dimensions (W*D*H): 200 × 185 × 98 mm \/ 7.87 ×\u003cem\u003e \u003c\/em\u003e7.28 × 3.85 in\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNet Weight: 650 g \/ 1.43 lb\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePackage Weight: 980 g \/ 2.16 lb\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003chr\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003ePacking List\u003c\/span\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e1* VFD253 PRO\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Power Adapter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* USB-C Cable\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Screwdriver\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* Remote Control (Without Batteries)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1* User Manual\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Douk Audio","offers":[{"title":"US","offer_id":48640104005864,"sku":"XX-VFD253-PRO-US","price":139.99,"currency_code":"USD","in_stock":true},{"title":"UK","offer_id":48640104038632,"sku":"XX-VFD253-PRO-UK","price":139.99,"currency_code":"USD","in_stock":true},{"title":"EU","offer_id":48640104071400,"sku":"XX-VFD253-PRO-DE","price":139.99,"currency_code":"USD","in_stock":true},{"title":"AU","offer_id":48640104104168,"sku":"XX-VFD253-PRO-AU","price":139.99,"currency_code":"USD","in_stock":true},{"title":"China","offer_id":48640104136936,"sku":"XX-VFD253-PRO","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0640\/6995\/9912\/files\/1_1420dda3-9187-4cd3-a92b-1b75045b7455.jpg?v=1781259983"}],"url":"https:\/\/duukaudio.com\/zh\/collections\/15-%e6%8a%98%e6%89%a3.oembed?page=2","provider":"Douk Audio","version":"1.0","type":"link"}