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HP-A4

HP-A4 24bit DAC Headphone Amplifier

Model HP-A4 is a new, improved version of the acclaimed HP-A3. It offers up to DSD 5.6MHz and PCM 192kHz for superior audio playback functionality as well as the sophisticated and class-leading appearance of the flagship HP-A8C.

24bit/192kHz(PCM), 5.6MHz(DSD) Sampling
Linear PCM audio up to 24bit/192kHz and DSD audio up to 5.6MHz playback.
USB buss powered
USB buss powered operation without AC adapter
HI/LO Gain selection
HI/LO Gain selection (10dB) for wider range of headphones
Asahi Kasei Developed Filter
Digital Filter selection between the conventional "sharp roll-off" and the "minimum delay" developed by Asahi Kasei to eliminate pre-echo.

Input

USB port sampling frequency

up to 24bit/192kHz(PCM), 5.6MHz(DSD)

Interface

USB high speed

Digital (Optical) Connector

optical, square, S/PDIF (44.1kHz – 192kHz)

Output

Phones Connector

Stereo phone

Max Output

100mW (32-ohm loaded)

THD

less than 0.004% at 1kHz, 32-ohm loaded, 100mW

Frequency response

20Hz - 80kHz +-3dB

Analog Connector

RCA Pin

THD

less than 0.01% at 1kHz

Frequency response

20Hz - 80kHz +-3dB

Digital Connector

Optical, square, S/PDIF (16bit/24bit: 44.1 - 192kHz)

General

Power Consumption

2.5 W

Dimensions

113mm(W) x 34mm(H) x 155mm(D)

Weight

approx. 500g

Accessories

1 x USB cable (1.0m), 4 x rubber foot, manual

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