Pass Labs

HPA-1 Headphone Amplifier

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Regular price
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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.


Gain 8 db
Output Power (into 20 ohms) 3.5 W
Output Power (into 300 ohms) 0.2 W
Input Impedence 50K ohm
Output Impedence <2 ohms
Inputs 2x SE RCA
Outputs 1x SE RCA
Power Consumption 23 W
Dimensions 11in x 13.5in 4in
Weight 6.4 kg



  • HPA-1 unit
  • Australian power cable
  • Manual


  • delivered Australia wide within 5 business days from purchase
  • free shipping
HPA-1 Headphone Amplifier
HPA-1 Headphone Amplifier
HPA-1 Headphone Amplifier
HPA-1 Headphone Amplifier

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