{"product_id":"fostex-hp-a4-24-bit-dac-headphone-amplifier","title":"Fostex HP-A4 24bit Desktop USB Amp\/DAC - Discontinued","description":"\u003ch2\u003eMain Features\u003c\/h2\u003e\n\u003cdiv class=\"main-features-sidebox\"\u003e\n\u003cul\u003e\n\u003cli\u003eUSB buss powered operation\u003c\/li\u003e\n\u003cli\u003eLinear PCM audio up to 24bit\/192kHz and DSD audio up to 5.6MHz playback*\u003c\/li\u003e\n\u003cli\u003eQuick and easy hi-resolution playback in combination with \"FOSTEX Audio Player\" software\u003c\/li\u003e\n\u003cli\u003eHI\/LO Gain selection (10dB) for wider range of headphones\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cspan\u003eModel HP-A4 is a new, improved version of the acclaimed HP-A3. It offers up to DSD 5.6MHz and PCM 192kHz for superior audio playback functionality as well as the sophisticated and class-leading appearance of the flagship HP-A8C.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eIn Detail\u003c\/h3\u003e\n\u003cdiv class=\"in-detail\"\u003e\n\u003cul\u003e\n\u003cli\u003eUSB buss powered operation without AC adapter\u003c\/li\u003e\n\u003cli\u003eLinear PCM audio up to 24bit\/192kHz and DSD audio up to 5.6MHz playback*\u003c\/li\u003e\n\u003cli\u003eQuick and easy hi-resolution playback in combination with \"FOSTEX Audio Player\" software\u003c\/li\u003e\n\u003cli\u003eHI\/LO Gain selection (10dB) for wider range of headphones\u003c\/li\u003e\n\u003cli\u003eAsynchronous transfer mode by using the custom made crystal\u003c\/li\u003e\n\u003cli\u003eDigital Filter selecting Roll-off characteristics and Cut-off characteristics according to the audio source\u003c\/li\u003e\n\u003cli\u003eComplies with USB Audio Class 2.0 on Windows XP (SP2 or later) \/ Vista \/ 7 \/ 8 and MacOS X 10.6 or later. **\u003c\/li\u003e\n\u003cli\u003eMicroSD (SDHC) card drive on the rear panel for future firmware update.***\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e* requires a DSD playback software on PC such as the upcoming \"FOSTEX Audio Player\". Both DoP and ASIO acceptable.\u003cbr\u003e** requires the dedicated driver for Windows.  Not compatible with Windows XP 64bit.\u003cbr\u003e*** does not playback audio data stored on a microSD card\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eInput\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eUSB port    sampling frequency    up to 24bit\/192kHz(PCM), 5.6MHz(DSD)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    Interface    USB high speed\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDigital    Connector:    optical, square\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    Format    S\/PDIF (16bit\/24bit: 44.1 – 192kHz)\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eOutput\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003ePhones    Connector:    Stereo phone\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    Max Output:    100mW (32-ohm loaded)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    THD:    less than 0.04% at 1kHz, 32-ohm loaded, 100mW\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    Frequency response:    20Hz - 80kHz +\/-3dB (1kHz, 32ohm loaded, 100mW, FS 192kHz)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eAnalog     Connector:    RCA Pin\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    Reference output level    2Vrms\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    THD:    less than 0.01% at 1kHz\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    Frequency response:    20Hz -  80kHz +-3dB (at FS 192kHz)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDigital    Connector:    Optical, square\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    Format    S\/PDIF (16bit\/24bit: 44.1 - 192kHz)\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eGeneral\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eMicroSD card slot:    microSD card (SDHC)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    Power:    USB buss powered\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    Power Consumption:    2.5W\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    Accessories:    1 x USB cable (1.0m), 4 x rubber foot, manual\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    Dimensions:    113mm(W) x 34mm(H) x 155mm(D)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e        excluding protruded parts\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e    Weight:    approx. 500g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Fostex","offers":[{"title":"Default Title","offer_id":18291988889715,"sku":"HP-A4","price":399.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/products\/HP-A4-01.jpg?v=1762457313","url":"https:\/\/audio46.mom\/products\/fostex-hp-a4-24-bit-dac-headphone-amplifier","provider":"Audio46 Headphone Store","version":"1.0","type":"link"}