Back to series Archive

Reference 2.1 DSP

2-channel high-end amplifier with DSP processor

Extreme power reserves and an extensive DSP audio signal processor make the 2-channel amplifier Reference 2.1 DSP into a high-end powerhouse.

2-channel high-end amplifier with DSP processor

Go to the car Hi-Fi summit with the Reference 2.1 DSP! The 2-channel amplifier with high-end sound performance offers extreme power reserves with 2 x 750 watts in 2 ohm but is also an acoustic precision weapon thanks to its flexibility untypical for that of a car Hi-Fi. The integrated DSP audio signal processor, which can be set using the display remote control or via PC offers a 31 band graphic equalizer, variable high and low passes, time delay correction and electronic level control. In combination with twin power supply, Sanken power transistors, high-quality polypropylene capacitors and high-power low impedance electrolytic capacitors it creates the reference in the 2-channel amplifier segment.

Technical specifications

Max. power output into 4 ohms,
14.4 V (sine burst 2:8, 1 kHz)
  • 2x500 / 1x1500 W
Max. power output into 2 ohms,
14.4 V (sine burst 2:8, 1 kHz)
  • 2x750 W
RMS power output into 2 ohms, 14.4V
(DIN 45 324)
  • 2x350 W
Frequency response
  • 5 Hz – 50 kHz (-3 dB)
  • < 0,025 % (1 kHz)
Input sensivity
  • 0.2 – 5 V
Signal-to-noise ratio (A-weighted)
  • > 100 dB
Dimensions (W x H x D)
  • 213 x 55 x 452 mm


  • High quality polypropylene capacitors for a distortion-free connection to the power amplifier
  • Twin Power Supply
  • Amplifier with high-end sound quality
  • Integrated DSP audio signal processor with 2 stereooutputs for connecting additional amplifiers
  • DSP features adjustable via display remote control or via PC software
  • 31-band graphic equalizer
  • Runtime correction
  • Electronic level control
  • High level input and optical SPDIF digital input
  • Power transistors from Sanken
  • 2 ohm stable