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D90B Manual - Audio Research
https://audioresearch.com/wp-content/uploads/2021/06/D90B_Manual.pdf
Audio Research.) Observe the following: 2. These adjustments should be accomplished under no signal condi tions and with line voltage at its "normal n for your location. The D90B should be thoroughly "warmed upti (thermal equal ibrium) prior to adjustment (typically 2 hours). Move each adjustment slowly, allowing time for circuit equalibrium
Audio Research D90B-SP tube amplifier? | Audiokarma Home ...
https://audiokarma.org/forums/index.php?threads/audio-research-d90b-sp-tube-amplifier.562718/
Audio Research D90B-SP tube amplifier? Discussion in 'Dollars and Sense' started by janikphoto, Dec 17, 2013. janikphoto Lunatic Member. Messages: 10,553. I'm not familiar with this gear, but it looks pretty mean! janikphoto, Dec 17, 2013 #1 . Please register to disable this ad. rogerfederer AK Subscriber Subscriber. Messages:
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
Audio Research D-90 Vintage Stereo Tube Amplifier - Made in the USA - 80 Glorious Watts. $0. Warm, musical, and engaging vintage tube amplifier from the early 1980's. Made to the highest quality standards available at the time (hand soldered and assembled). A …
Audio Research D-90b with upgraded tubes made in England ...
https://www.audiogon.com/listings/lisac195-audio-research-d-90b-power-amplifier-upgraded-tubes-tube
Audio Research D-90b for sale. The D90b is the last and best of the D-90's and was most often paired with an SP-6 -series preamp, which featured built-in power switching for many D-series amps of that era. Hence the D-90's lack ...
Audio Research D-90 - Audiogon Discussion Forum
https://forum.audiogon.com/discussions/audio-research-d-90
Audio Research D-90. Hi, ... 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. The face plate states it is a D-90. There is no (R) after so it could be someone down the line put the cheeper tubes in. This I don't know,but would like to find out.
Audio Research D-90B | Tube | Audiogon
https://www.audiogon.com/listings/tube-audio-research-d-90b-2013-12-14-amplifiers-12590
I have it for you..... an ARC D90B in beautiful condition. Back in 1980 I bought an Audio Research D-90. Little did I know it was the Rev C. I used that amp to drive Acoustat 2+2's in a medium size living room in my flat with great success paired with an SP-6C1 preamp.
ARCDB
https://www.arcdb.ws/D90/D90.html
D-90: 90 watts per channel minimum continuous (both channels operating) at 16 ohms from 25 Hz to 20 kHz with less than 1% total harmonic distortion. Typically below .01% at 1 watt. Approximate power available per channel at "clipping" (both CH. OP, 1kHz): 105 watts.
Audio Research – High-end audio equipment
https://audioresearch.com/
Audio Research continues its dedication to unparalleled musical expression and crafting components of the highest quality and lasting value for its customers. Our long-term dedication to service is peerless in this industry (Audio Research, with few exceptions, can repair anything ever produced during its entire history).
Audio Research SP9 preamplifier | Stereophile.com
https://www.stereophile.com/tubepreamps/739/index.html
Audio Research SP9 preamplifier. Following the introduction of their very expensive, tube/FET hybrid SP11 preamplifier, there were rumors that Audio Research was working on a hybrid tube/transistor preamplifier targeted to cost less than $2000. The rumors were confirmed when ARC showed a black-and-white photo of the SP9 at the 1987 Winter CES.
Audio Research D90B For Sale - Canuck Audio Mart
https://www.canuckaudiomart.com/details/649276061-audio-research-d90b/
FOR SALE or TRADE: Audio Research D-115 MK-2 Tube Amplifier without or with tubes please read: Tube Amplifiers: $1500.00: ON Oct 03, 2021: 2 : FOR SALE: Audio Research D79 original: Tube Amplifiers: $6600.00: BC Sep 23, 2021: 3 : FOR SALE or TRADE: Audio Research REF 110 (was around $13,000 new) Tube Amplifiers: $4300.00: QC Jul 20, 2021: 4
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