Hybrid stereo power amplifier

Proven technology. The SP-331 end stage processes the input signal via two 6N16 valves each. There are 12 TOSHIBA end transformers provided for the power in each case. The SP-331 can also be operated at 2 Ohm without difficulties. This is ensured by a ring core transformer with over 1,000 watts and filtering of 80,000 μF. The result: beautiful sound and deep basses.

Technical Specifications

  • Frequency response:10 Hz - 50 kHz +/- 0.5 dB,
  • Nominal Output Power RMS / 8 Ohm: 2 x 150 Watt, RMS / 4 Ohm: 2 x 300 Watt
  • Total harmonic distortion: < 0.1 % (1 kHz, 1 Watt)
  • Input sensitivity: 1,2 V,
  • Signal-Noise ratio: > 90 dB,
  • Input impedance: 47 kOhm,
  • Inputs: 1 x Stereo RCA.
  • Outputs: 4 x 2 Speaker Terminal.
  • Tubes: 2 x 6N16B
  • Colour: black/silver,
  • Weight: 19 kg,
  • Dimensions (WxHxD): 430 x 160 x 450 mm


Hybrid class-A stereo power amplifier

This redesign of our hybrid legend has almost grown out of its class thanksto the best components!


Class-A Stereo Power Amplifier

Reissued remastered stereo amplifier with power supply, which gives the amp more musicality.


Class-A mono power amplifier

With its input switch and Class A operation that can be turned off, an improved solidLine successor to the SP-991.


Mono power amplifier

Main amplifier for one channel, combinable in various systems, with more power reserves than the SP-996.


Mono power amplifier

These tough guys have no problem with any loudspeakers and they play especially well with the SA-94.


Class-A mono Tube power amplifier

Many have already lost their hearts to these little monoblocks that have been tried and tested in particular with the SA-T7.