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Fostex HP-A3
32-Bit D/A Converter & Headphone Amplifier


The Fostex HP-A3 is the perfect DAC for Computer Audio.
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Our Price: $299.99
List Price: $399.99
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Fostex HP-A3
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The Fostex HP-A3 is the perfect DAC for Computer Audio. This high quality unit features 32-bit D/A Conversion with an integrated headphone amplifier exclusively designed to get the most from and PC audio set-up.

Fostex HP-A3 Features:

  • USB Bus power without using unwanted AC adapter
  • Works with up to 24bit/96kHz audio source
  • Exclusive PLL power supply is built in to reproduce the stable electrical supply
  • High quality analog headphone amp to drive any type of headphones
  • Equipped with high-grade AKM 32-bit DAC AK4390
  • Condensers and OP amp designed exclusively for audio products
  • USB / Digital (Optical) input selector
  • Headphones / RCA (Analog) output selector
  • Doubles as D/D converter from USB digital audio to Optical
  • An USB/AC adapter from the shelf can be used for use as an Optical / Analog converter
    • NOTE: When using the USB input, the sampling frequency is fixed at 96kHz.  Audio file with Fs 32k/44.1k/48kHz will be reproduced by upsampling to 96kHz and the S/PDIF Out is also fixed at 96kHz.

Fostex HP-A3 Specifications:

  • Input
    • USB Port Sampling Frequency:  16bit-24bit/96kHz
    • Interface:  USB full speed
    • Digital Connector:  Optical, square
    • Format:  S/PDIF (32kHz – 96kHz)
  • Output
    • Phones Connector:  Stereo phone
    • Max Output:  100mW (32-ohm loaded)
    • THD:  Less than 0.01% at 1kHz, 32-ohm loaded, 100mW
    • Frequency Response:  20Hz - 20kHz +/- 0.3dB (32 Ohms loaded, 100mW)
    • Analog Connector:  RCA Pin
    • Reference Output Level:  -10dBV
    • THD: Less than 0.01% at 1 kHz
    • Frequency response:  20 Hz - 20 kHz +/-0.3dB
    • Digital Connector:  Optical, square
    • Format:  S/PDIF (32kHz – 96kHz)
  • General:
    • Power:  DC5V (via USB port)
    • Power Consumption:  2.5W
    • Accessories:  1 x USB cable (1.0m), 4 x rubber foot, manual
    • Dimensions (WxHxD):  108mm x 36mm x 140mm
    • Weight:  Approx. 450g

General Questions


Can I return a service part once it has been installed?


Installed service parts are non returnable, unless they are defective. All defective returns are exchange only - no money will be refunded.

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