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). . . .

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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.

http://www.fostexinternational.com/docs/products/HP-A8mk2.shtml

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