SKU: HPA-1 Category:


The HPA-1 headphone amplifier was designed ground-up to become what we believe is one of the very best sounding headphone amplifiers available today. With low feedback, wide bandwidth and a direct coupled MOSFET output stage, this musical instrument drives even the most difficult headphone loads with ease, power and grace. The HPA-1 also functions as a line-level preamplifier that sonically rivals much higher-priced competition. The measured performance is superb and the sound even better.

Additional information


Gain (dB)
8 dB
Power Consumption (W)
Output Power into 20 ohms
3500 mW
Output Power into 300 ohms
200 mW
Frequency Response 10hz -100k
-1 dB
THD + Noise
< 0.005 at 1V out
Input Impedance
50K Ohm
Output Impedance
< 2 ohms


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