Unison Research ABSOLUTE 845 Dual Mono Stereo Integrated Tube Amplifier (40 + 40 W RMS)




After more than 20 years, the Absolute is still ranked first overall in tube amps with a score higher than any other amplifier. No other audio product has remained at the top of its class for so long. The Absolute 845 is not only the story of Unison Research, it is a significant piece of audio history in general, forever tied to the world of analog valves. In many ways, the Absolute is still unsurpassed.

Remote control: RC 2


  • 4 x 845
  • 6 x ECC 82
  • 2 x ECC 83
TypeDual mono Stereo Integrated Valve Amplifier
Output Stagesingle ended parallel A class
Output Power40 watt / channel
Inputs5 line, 2 tape
Outputs2 tape, loudspeakers bi-wiring
Input Impedance47kohm
Output Impedance4 – 8 Ohm
Feedback factor10 dB
Frequency Response20 Hz – 30 kHz
Valves4 x 845, 6 x ECC82, 2 x ECC83
Remote Control-
Power Consumption700 VA

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Four more than four decades Trutone Electronics has been proudly serving the Greater Toronto Area with the greatest asset any specialty audio video dealership possesses: a well informed, experienced and knowledgeable sales staff. Our location in Mississauga is able to assist you in creating a smart home automation system, distributed audio throughout your home and yard, or dedicated home theatre. Trutone's carefully chosen product lines include surround sound receivers, loudspeakers, televisions, custom remote controls, audio video furniture, room acoustic controls, headphones, bluray players, projectors, and screens.