FOSTEX HP-A8 MKII

HP-A8MK2 is a DAC headphone amplifier with high efficiency, high-quality sound. You can enjoy high-quality digital audio signals from your computer or from a digital audio player.

Fostex USB Audio Driver for Windows (V.2.2.1)
Dedicated USB driver software is necessary to install on PC for Windows. Please be sure to uninstall the old driver software, if any, before installing this new software.


Main features
- Headphone amplifier equipped with high-quality sound 32bit-DAC (AK4490) and all discrete circuit.
- Supports a sampling frequency of up to 32 bit/192 kHz through in house developed USB driver. In addition, supports DSD 11.2 MHz (ASIO).
    * DSD playback on Mac is compatible up to 5.6 MHz
- Eliminates the jitter caused by low accuracy of the source clock of the computer, etc. by using the asynchronous mode of an SPXO for audio (crystal oscillator).


In Detail
- Headphone amplifier equipped with high-quality sound 32bit-DAC (AK4490) and all discrete circuit.
- Supports a sampling frequency of up to 32 bit/192 kHz through in house developed USB driver. In addition, supports DSD 11.2 MHz (ASIO).  *DSD playback on Mac is compatible up to 5.6 MHz.
- Eliminates the jitter caused by low accuracy of the source clock of the computer, etc. by using the asynchronous mode of an SPXO for audio (crystal oscillator).
- Equipped with high-quality sound, high-accuracy electronic volume for audio level control.
- Equipped with a large capacity toroidal power transformer.
- Computers, and digital and analog audio devices can be used as the input source.
- Plays DSF files, WAV files and AIFF files on an SD (SDHC) card directly using built-in SD (SDHC) card drive. The drive can also be used for future updates.
- There are several conditions for playback from an SD card. For more information, please refer to "Listening to the files on an SD card" on page 12.
- Equipped with an analog output terminal (RCA pin jack).
- Both the internal clock and the external clock are available for the master clock (only for SPDIF).
- 2x or 4x upsampling function (can also be turned off ).
- Switchable digital filter.
- 24 level gain settings for headphone output.
- Direct analog output that does not pass through the volume.
- Equipped with an infrared remote controller.
- Equipped with an organic EL display.
- Equipped with independent clocks for 44.1K factor and 48K factor.

Specifications
INPUT
USB
Connector : B type
Quantization : 16 / 24 / 32 bit
Sampling Frequency : PCM: 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz
                                   DSD: 2.8 / 5.6 / 11.2 MHz
Interface : USB High Speed
DIGITAL ??? OPTICAL
Connector: Optical (Square type)
Format: S/PDF
Quantization: 16 / 24 bit
Sampling Frequency: 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz

DIGITAL ??? COAXIAL
Connector: RCA Pin
Format: S/PDF
Quantization: 16 / 24 bit
Sampling Frequency: 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz

DIGITAL ??? AES/EBU
Connector: XLR-3-31 type (2 pin hot)
Format: AES/EBU
Quantization: 16 / 24 bit
Sampling Frequency: 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz

ANALOG
Connector: RCA pin
SD CARD
Card: SDHC
File System: FAT32
Format: DSF/ WAV / AIFF
Quantization: 16 / 24 / 32 bit
Sampling Frequency: PCM: 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz
                                  DSD: 2.8 MHz

OUTPUT
PHONES
Connector: Stereo 1/4???
Maximum Output: 700 mW (32 ohm load)
Load Impedance: 16 ??? 600 ohm
T.H.D. less than 0.002% (at 1kHz, 32ohm, 1Vrms output)
Frequency Response: 10 Hz ??? 80 kHz +-3dB

ANALOG
Connector: RCA pin
Load Impedance: less than 10k ohm
T.H.D. less than 0.002%
Frequency Response: 10 Hz ??? 80 kHz +-3dB (at S/F192kHz)

DIGITAL-OPTICAL
Connector: Optical (Square type)
Format: S/PDIF
Quantization: 16 / 24 bit
Sampling Frequency: 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz

DIGITAL-COAXIAL
Connector: RCA pin
Format: S/PDIF
Quantization: 16 / 24 bit
Sampling Frequency: 44.1 / 48 / 88.2 / 96 / 176.4 / 192 kHz

GENERAL
Accessories: Remote Controller, AAA battery x 2, Power cable, Owner???s Manual
Measurements: 213(W) x 78(H) x 315(D) including protruded parts
Weight: approx. 3.8kg
Power: AC230V
Power Consumption: 24W