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.
| Inputs |
1x USB 2.0 full speed 1x S/PIDF digital connector: optical, square (32 kHz to 96 kHz) |
| Outputs |
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 |
| Compatibility |
Mac: OSX Windows: XP or later USB port or S/PDIF optical output |
| Power | DC5V |
| Power Consumption | 2.5 W |
| Dimensions (W x H x D) | 4 x 1 x 6" (108 x 36 x 140 mm) |
| Weight | 1 lb (450 g) |