{"product_id":"douk-audio-u3-mini-pure-class-a-headphone-amplifier-hifi-ultra-compact-home-desktop-stereo-amp-for-hd580-hd600-hd650-headsets","title":"Douk Audio U3 Mini Pure Class A Headphone Amplifier HiFi Ultra-compact Home Desktop Stereo Amp for HD580\/HD600\/HD650 Headsets","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003eBluetooth\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBody Material\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMetal\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eDouk Audio\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBuilt-in Battery\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCertification\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCE\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChannels\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e2 (2.0)\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChoice\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eyes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDSD (Direct Stream Digital)\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eInput Type\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eRCA\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eModel Number\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eU3\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOperational Amplifier Chips Model\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNE5532\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput Power\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e1300mW\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput Type\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eLINE OUT (AUDIO OUT)\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYES\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eRecommended Headphone Maximum Impedance\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e501 - 600 Ohm\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eType\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMini Amplifier\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\u003cdiv style='font-family:\"Microsoft YaHei\";font-size:medium;color:rgb(0, 0, 0)'\u003e\u003cdiv id=\"pastingspan1\"\u003e\n\u003cdiv id=\"pastingspan1\"\u003e\u003cdiv\u003e \u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv id=\"pastingspan1\"\u003e\n\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style='font-family:\"times new roman\", times'\u003eWarm tips:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style='font-family:\"times new roman\", times'\u003eNot inlcude power adapter, recommend to use original high-quality power adapter above 5W. \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003e\u003cspan style=\"font-size:24px\"\u003e\u003cspan style='font-family:\"times new roman\", times'\u003eFor example: the current should be above 1A if use DC 5V while need above 0.5A if use DC 12V power adapter.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eFeatures\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv id=\"pastingspan1\" style='font-family:\"Times New Roman\";font-size:14pt'\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAdopting innovative circuit design, DC 5-20V wide input working voltage, the amplifier circuit can always work at a high voltage of 26V, and the background noise index is excellent. With wide frequency response extension, excellent transient response, excellent purity and transparency, and good dynamic range.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAdopting original TI-NE5532 classical op amp and transistor expanding current circuit, using 1300mA large current output transistor working in class A status, with ultra-low distortion, and the sound is warm and delicate, full and mellow.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePluggable op amp socket design, convenient to upgrade different op amps and bring much DIY fun and playability for audiophiles. Smooth and mellow sound, suitable for listening to vocals or string music, classic or pop music, and even with unique charm when playing rock.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eMini size with exquisite appearance and most cost-effective, brings big surprise for all audiophiles, easily to drive most headphones in the market, providing larger power, better sound field and details, very suitable for home\/office desltop audio system use.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eWith stong drive power, easily to drive most high-impedance headphones such as:\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cblockquote style='font-family:\"Microsoft YaHei\";font-size:medium;color:rgb(94, 53, 177);border:none;margin:0px 0px 0px 40px;margin-bottom:0px;margin-top:0px;margin-left:40px;margin-right:0px;padding:0px 0px 0px 0em;padding-bottom:0px;padding-top:0px;padding-right:0px'\u003e\n\u003cdiv\u003e\u003cdiv id=\"pastingspan1\" style='font-family:\"Times New Roman\";font-size:14pt'\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003e\u003cspan style=\"color:rgb(0, 0, 0)\"\u003eHD580\/HD600\/HD650\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cdiv id=\"pastingspan1\" style='font-family:\"Times New Roman\";font-size:14pt'\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003e\u003cspan style=\"color:rgb(0, 0, 0)\"\u003eK701\/K702\/Q701\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cdiv id=\"pastingspan1\" style='font-family:\"Times New Roman\";font-size:14pt'\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003e\u003cspan style=\"color:rgb(0, 0, 0)\"\u003eDT880\/T70\/T90\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cdiv id=\"pastingspan1\"\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003e\u003cspan style=\"color:rgb(0, 0, 0)\"\u003eSR225\/SR325\/RS1e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/blockquote\u003e\u003cdiv style='font-family:\"Microsoft YaHei\";font-size:medium;color:rgb(0, 0, 0)'\u003e\n\u003cdiv id=\"pastingspan1\" style='font-family:\"Times New Roman\";font-size:14pt'\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003chr\u003e\n\u003cdiv id=\"pastingspan1\" style='font-family:\"Times New Roman\";font-size:14pt'\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eParameters:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv id=\"pastingspan1\" style='font-family:\"Times New Roman\";font-size:14pt'\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAudio input: stereo L\/R RCA\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eAudio output: 6.35mm headphone jack (with 6.35mm to 3.5mm adapter)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eOutput power: ≥1300mW (32Ω)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eMatched headphone impedance: 18-600Ω\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eFrequency response: 20-30KHz\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eSignal to noise ratio: ≥110DB\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eMax output amplitude voltage: 25V\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eInput voltage: DC 5-20V\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eDimension(W*D*H): 67*93*30mm \/ 2.64*3.66*1.18in\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003eNet weight: 169g \/ 0.37lb\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePackage weight: 310g \/ 0.68lb\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003chr\u003e\n\u003cdiv id=\"pastingspan1\" style='font-family:\"Times New Roman\";font-size:14pt'\u003e\u003cstrong\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003ePacking List\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv id=\"pastingspan1\" style='font-family:\"Times New Roman\";font-size:14pt'\u003e\u003cul\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003e1*U3 Headphone Amplifier\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003e1*USB to DC Cable\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cp\u003e\u003cspan style=\"font-size:22px\"\u003e\u003cspan style='font-family:\"times new roman\", times, serif'\u003e1*6.35mm to 3.5mm Headphone Adapter\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H476ca9108005461ba98b0674d2dbdc29m.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae03.alicdn.com\/kf\/S762dcdcd674345d7b237b962f74b8e191.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Hbafed3f816494be2bf4015c371e83a3eB.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H888e993953db4b8bbbb8ad0e3bc3ef11r.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Hbadd7a8b485d48ee9bab5a80e2c5dd35D.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H505a5ed8944e436183afd9708c6aee2d8.jpg\" slate-data-type=\"image\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H40f116c80a634edeb54ae5d368a73c78g.jpg\" slate-data-type=\"image\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"HHRummurz.com","offers":[{"title":"Default Title","offer_id":43488498286670,"sku":"\u003cnone\u003e","price":133.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/9066\/7598\/files\/Sc6065f90edf54e60b83d2790c88395a9f.webp?v=1772383941","url":"https:\/\/www.hhrumurz.com\/products\/douk-audio-u3-mini-pure-class-a-headphone-amplifier-hifi-ultra-compact-home-desktop-stereo-amp-for-hd580-hd600-hd650-headsets","provider":"HHrumurz.com","version":"1.0","type":"link"}