Fostex HP-A4 24bit USB Amp/DAC Fashion

• USB buss powered operation without AC adapter
• Linear PCM audio up to 24bit/192kHz and DSD audio up to 5.6MHz playback*
• Quick and easy hi-resolution playback in combination with “FOSTEX Audio Player” software
• HI/LO Gain selection (10dB) for wider range of headphones
• Asynchronous transfer mode by using the custom made crystal
• Digital Filter selecting Roll-off characteristics and Cut-off characteristics according to the audio source
• Complies with USB Audio Class 2.0 on Windows XP (SP2 or later) / Vista / 7 / 8 and MacOS X 10.6 or later. **
• MicroSD (SDHC) card drive on the rear panel for future firmware update.***

* requires a DSD playback software on PC such as the upcoming “FOSTEX Audio Player”. Both DoP and ASIO acceptable.
** requires the dedicated driver for Windows. Not compatible with Windows XP 64bit.
*** does not playback audio data stored on a microSD card

Specifications

Input
USB port sampling frequency up to 24bit/192kHz(PCM), 5.6MHz(DSD)
Interface USB high speed
Digital Connector: optical, square
Format S/PDIF (16bit/24bit: 44.1 – 192kHz)

Output
Phones Connector: Stereo phone
Max Output: 100mW (32-ohm loaded)
THD: less than 0.04% at 1kHz, 32-ohm loaded, 100mW
Frequency response: 20Hz – 80kHz +/-3dB (1kHz, 32ohm loaded, 100mW, FS 192kHz)
Analog Connector: RCA Pin
Reference output level 2Vrms
THD: less than 0.01% at 1kHz
Frequency response: 20Hz – 80kHz +-3dB (at FS 192kHz)
Digital Connector: Optical, square
Format S/PDIF (16bit/24bit: 44.1 – 192kHz)

General
MicroSD card slot: microSD card (SDHC)
Power: USB buss powered
Power Consumption: 2.5W
Accessories: 1 x USB cable (1.0m), 4 x rubber foot, manual
Dimensions: 113mm(W) x 34mm(H) x 155mm(D)
excluding protruded parts
Weight: approx. 500g