Fostex HP-A3 32-Bit D/A Convertor with Headphone Amp

Special Price $299.99 Regular Price $399.99
Ships in 10-14 business days

$0.00 Tax Outside NJ


  • 32-Bit Digital to Analog Conversion
  • Works With Audio Up to 24-bit/96kHz
  • USB Bus Powered
  • Built-In Headphone Amplifier
  • 2x RCA or 1x 1/4" Headphone Outputs
  • S/PDIF Digital Input & Output
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The HP-A3 32-Bit D/A Convertor with Headphone Amp from Fostex is a digital to analog audio convertor designed for computer audio output. It is capable of handling up to a 24-bit, 96kHz digital audio source. 

It features two analog outputs choices: two RCA line outs or a ¼" headphone out, powered by its built-in headphone amplifier. The HP-A3 has two digital input options; either USB or optical S/PDIF. It also features an S/PDIF digital output, which allows the unit to act as a digital to digital convertor from USB to optical. The unit is USB bus powered regardless of input routing choice and does not have a separate AC input. The input and output routing is selectable by front panel selector buttons.

USB Bus power without using bulky AC adapter for ease of use with a laptop

Equipped with high-grade AKM 32bit DAC AK4390

Power supply is built-in to reproduce the stable electrical supply

Condensers and OP amp are designed exclusively for audio applications

USB or digital (optical) input selector button

Headphones or RCA (analog) output selector button

Doubles as digital to digital converter from USB digital audio to optical output

Fixed sampling rate of 96 kHz with USB input

Compatible with Mac OSX and Windows XP or later


More Information
Stock StatusShips in 10-14 business days
Mfr Part NoAMS-HP-A3
Upc Number636827300223


1x USB 2.0 full speed
1x S/PIDF digital connector: optical, square (32 kHz to 96 kHz)


1x 1/4" headphone output
2x RCA line outputs

Maximum Output

Headphone output: 100 mW (32 Ω loaded)

Reference Output

Line output: -10 dBV

Total Harmonic Distortion

Headphone output: < 0.01% at 1 kHz, 32 Ω loaded, 100 mW
Line outputs: < 0.01% at 1 kHz

Frequency Response

Headphone output: 20 Hz to 20 kHz +/- 0.3 dB (32 Ω loaded, 100 mW)
Line outputs: 20Hz to 20kHz +- 0.3 dB


Mac: OSX
Windows: XP or later
USB port or S/PDIF optical output



Power Consumption

2.5 W

Dimensions (W x H x D)

4 x 1 x 6" (108 x 36 x 140 mm)


1 lb (450 g)


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