Power supply:
For output stage: Switching power supply for 400 Watt

Technical data:
2 x 70 watt/8 ohms, 2 x 120 watt/4 ohms
Frequency response: 5 Hz to over 100,000 Hz (-1db)

3x Stereo high level inputs Cinch
1x connectors for a stereo speaker pair

depth: 24 cm
width: 36 cm
height: 10 cm


Our smallest integrated amplifier is compact in size, but has all the features of its bigger brothers and sisters: the sophisticated circuitry, the high quality components and the remarkable high output power make the HPI 100 the ideal gadget. Even where space does not permit full-size devices, the listening pleasure is unlimited.

Signal voltage amplification with tubes

Producing a natural, lively sound image due to high dynamic range with very low distortion.

Balanced output stage

With complementary lateral MOSFETs: broadband, high current capability, lowest distortion.

Active volume control

Constant high sound quality independent of volume setting (mechanical potentiometers change their  technical characteristics according to slider  settings)

Power supply

Elaborate power supply with voltage stabilizers for each amplifier stage - three stabilizers for the audio circuitry, separate independent power supply for the control functions. Individually adjustable power supply, specially designed for audio applications for the output stages.


high quality components, e.g. 1% and 0.1% precision resistors, highest quality film capacitors in the signal path, 105° electrolytic capacitors with high durability in the power supply, circuit boards with optimized conductor path.

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