FOSTEX HP-A3 MKII

D/A Converter

FOSTEX HP-A3 MKII

The HP-A3mk2 is a USB DAC powered by USB bus power. USB audio and optical digital audio signals from a PC can be converted to analog signals and output through the line output and headphone output. It works with the USB Audio 2.0 driver of a PC (Windows or Mac OS) and can be used immediately after connecting the USB cable and performing simple settings.

The DAC chip used is the ESS Technology ES9016K2M.
Thanks to the use of a high-quality DAC chip, the supported sampling frequency has been significantly improved to 192 kHz. Users can enjoy superior audio quality without sacrificing ease of use.

The analog circuitry has been completely redesigned to match the higher supported sampling frequency, achieving high-end product performance, including improved total harmonic distortion (THD).

Gain switch to accommodate various playback sources
The headphone amplifier gain can be switched between HI and LO positions. The HI position provides a 10 dB increase in volume over the LO position. The HI position is effective for low-level input signals and can be used with various playback sources.

Technical Specifications:

• Sampling frequency: 16 bit-24 bit/96kHz via USB port
• Interface: USB full speed
• Digital connector: optical, square
• Format: S/PDIF (32kHz – 96kHz)
• Maximum output: 100mW (32-ohm load)
• THD (Total harmonic distortion): less than 0.01% at 1kHz, 32-ohm load, 100mW output
• Frequency response: 20Hz / 20kHz ±0.3 dB (32-ohm load, 100mW output)
• Analog connector: RCA pin
• Reference output level: -10dBV
• THD: less than 0.01% at 1kHz
• Frequency response: 20Hz / 20kHz ±0.3 dB
• Digital connector: Optical, square
• Format: S/PDIF (32kHz – 96kHz)
• Dimensions: 108mm (W) x 36mm (H) x 140mm (D)
• Weight: approximately 450g