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Audio Research D-90 Vintage Stereo Tube Amplifier - Made ...
https://skyfiaudio.com/products/audio-research-d-90-vintage-stereo-tube-amplifier-made-in-the-usa-80-glorious-watts
D90 Manual - Audio Research
https://audioresearch.com/wp-content/uploads/2021/06/D90_Manual.pdf
Your D90 ampl ifier's power cord is equipped with a standard three-prong grounding plug which, if used normally, will ground the chassis to the While this procedure undoubtedly provides the maximum possible power line. in many cases, cause your audio system to have a safety in use it will, residual hum.
Audio Research D-90 - Audiogon Discussion Forum
https://forum.audiogon.com/discussions/audio-research-d-90
The D-90b Takes 8-5881's,1-6550's,1-12ax7,and 5-6922's The revised D-90 takes 8-5881's or 6l6's,1-6550,4-12ax7's,2-12at7's,2-6fq7's. This is the tube setup mine has. Also the print out i have from the web sight shows pic's of the D-90 and D90b. The D-90b has 8 cans,where the D-90 has 9 can caps.My amp has 9 also.
Audio Research D-90 Stereo Valve Power Amplifier Manual ...
https://www.hifiengine.com/manual_library/audio-research/d-90.shtml
Power output: 80 watts per channel into 16Ω (stereo) Frequency response: 25Hz to 20kHz. Total harmonic distortion: 0.5%. Damping factor: 25. Input sensitivity: 1.2V. Signal to noise ratio: 90dB. Dimensions: 490 x 180 x 420mm. Weight: 29kg.
Audio Research D90... a HOT, buzzing amplifier | diyAudio
https://www.diyaudio.com/community/threads/audio-research-d90-a-hot-buzzing-amplifier.283221/
Audio Research D90... a HOT, buzzing amplifier | diyAudio WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES. Building, troubleshooting and testing of these amplifiers should only be performed by someone who is thoroughly familiar with the safety precautions around high voltages. Amplifiers Tubes / Valves
Audio Research D-90 Vintage Tube Amplifier USA Made! 80 ...
https://www.audiogon.com/listings/lis9c52f-audio-research-d-90-vintage-tube-amplifier-usa-made-80-glorious-watts-amplifiers
Vintage. Amplifiers. Audio Research D-90 used **Please click here to check out our newly launched SkyFi Audio website with additional items for sale**Warm, musical, and engaging vintage tube amplifier from the early 80s. Made to the highest qu... 1699.00.
Audio Research D90 - Tube Amplifier - Fully Rebuilt ...
https://www.canuckaudiomart.com/details/649793226-audio-research-d90-tube-amplifier-fully-rebuiltrecapped/
Fully rebuilt/recapped Audio Research D90 - tube amplifier. Power filter caps 8 pcs replaced with nichicon high temp 105C rating as well as all the axial electrolytic caps with Vishay Sprague/Panasonic. Yellow film caps, replaced with Solen Metalized PP caps, Bridge rectifier replaced with the same part but brand new as well as a new 12V regulator.
Audio Research – High-end audio equipment
https://audioresearch.com/
Audio Research has produced some of the finest components for music reproduction; this is especially true with regard to preamplifiers. In 1973, the SP3 was hailed as the best preamplifier available, and this tradition of excellence has continued ever since. The Reference Series from Audio Research was first introduced in 1995 and has been the ...
Audio Research D-100 power amplifier | Stereophile.com
https://www.stereophile.com/content/audio-research-d-100-power-amplifier
Audio Research D-100 power amplifier. We cannot recall when any new products have generated as much of a stir among perfectionists as the new solid-state equipment from Audio Research. Preceded by rumors of "a new kind of amplifying device—a cross between a tube and a transistor"—the announcement of ARC's new power amp and SP-4 preamplifier ...
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