Fostex HP-A8C 32-Bit Digital Audio Converter and Headphone Amplifier

The Fostex HP-A8C 32-Bit DAC Headphone Amplifier is a high-fidelity digital-to-analog converter with a discrete analog headphone amplifier. With this DAC, you can listen to music on headphones or speakers from a computer over USB or from another audio source device. For inputs, the DAC accepts digital AES/EBU, digital optical, digital coaxial, SD cards via an SDHC card slot, or analog RCA. For audio streamed via USB, coaxial and optical inputs, the DAC can up sample the incoming signal by x2 or x4 at up to a 192 kHz sample rate with 32-bit resolution for Mac OS X and 24-bit resolution for Windows.



Outputs
For outputs, the DAC features RCA line and two 1/4" headphone jacks


Control
A button on the front of the unit allows you to turn the power off/on, and two knobs allow you to select the input and output sources. An electronic volume knob allows you to adjust the headphone gain from 0 to -12 dB in 0.5 dB step increments. A direct-out mode can be engaged to bypass the volume control knob altogether. For added convenience, the DAC comes with a dedicated remote controller


Built-in SDHC Card Slot for DSD Playback
The SD card slot can playback content in Direct Stream Digital File format (DSF)


Asynchronous Mode with TCXO Clock
To keep precise low-jitter time, the DAC utilizes an internal asynchronous temperature-compensated crystal oscillator clock


Power
The DAC utilizes a large-capacity toroidal transformer power supply


Selectable Internal or External Clock
The DAC can utilize either its internal asynchronous crystal oscillator clock or be switched to sync via digital I/O to an external clock source such as from a separate analog to digital converter, a master clock, or a reference clock for syncing audio to video




Digital Filter Selection

To remove pre-echo from playback, the DAC allows you to select between a traditional sharp roll off and a minimum delay filter






Input


Sampling Resolution
USB Port: up to 32 bit/192 kHz (24 bit on Windows) 192 kHz sample rate 32-bit for Mac 24-bit for Windows


Interface
1 x High Speed USB 2.0


Digital
2 x optical connector, square 2 x coaxial connector, RCA pin


Format
Optical and Coaxial: S/PDIF


Resolution
USB: 44.1 to 192 kHz Optical: 44.1 to 192 kHz Coaxial: 44.1 to 192 kHz AES/EBU: 44.1 to 192 kHz SDHC: DSF


Analog Audio Connector
RCA pin left and right






Output


Headphone Outputs
Connector: Stereo Phone


Max Output
700 mW (32 Ω loaded)


Recommended Load Impedance
16 to 600 Ω


THD
Less than 0.002% at 1 kHz, 32 Ω loaded, 100 mW


Frequency Response
10 to 80,000 Hz ±0.3 dB


Digital Audio Connectors
Optical, square Format: S/PDIF






General


Power Consumption
24 W


Dimensions (WxHxD)
8.39 x 3.07 x 12.36" (21.3 x 7.8 x 31.4 cm)


Weight
8.26 lb (3.75 kg)



MB, THSD : www.music-blvd.com




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