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The HPA-1 headphone amplifier was designed ground-up to become 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.


The product can be ordered through the following form.
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Brands and series
SKU: p19_PAS_AMP_HAMP Categories: , Tag:

Gain (dB): 8 db
Frequency Response 10hz – 100k: -1 dB
Output Power into 20 ohms: 3500 mW
THD + Noise: < 0.005 at 1V out Out Power into 300 ohms: 200 mW Input Impedance: 50K Ohm Output Impedance: < 2 ohms Power Consumption (Watts): 23

Additional information

Weight 6.4 kg
Dimensions 342.9 × 279.4 × 101.6 mm