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Audio Research Reference 250 SE Amplifier - The …
https://www.theabsolutesound.com/articles/audio-research-reference-250-se-amplifier
A. A new Reference tube amplifier from venerable manufacturer Audio Research is always a big deal. Incorporating significant upgrades from its Reference 250 predecessor, the Reference 250 SE mono amplifier features Tung-Sol’s latest high-current output tube, the KT150 as well as new active and passive parts. Reference 250 owners can have their unit upgraded to …
Audio Research Reference 250 Monoblock Amplifier - …
https://www.theabsolutesound.com/articles/audio-research-reference-250-monoblock-amplifier
Audio Research Reference 250 Monoblock Amplifier. William Zane Johnson, God bless him, may be gone and his path-breaking company, the Audio Research Corporation, may now be owned by an Italian holding company, but in spite of the loss of its founder and the change in proprietorship (which, let me be clear, has not affected the way things are done at Audio Research—all of …
Audio Research D-250 II Servo power amplifier ...
https://www.stereophile.com/tubepoweramps/413/index.html
The D-250 is the flagship of Audio Research's power amplifier range and, at 250 watts per channel, is the most powerful all-tube stereo amplifier currently available in the US. Under the circumstances, then, it is not surprising that it should also be one of the heaviest and largest. The appearance alone of the D-250 inspires respect.
Audio Research Reference 250 SE Amplifier | Audio Advice
https://www.audioadvice.com/audio-research-reference-250-se-amplifier
The Reference 250 SE features major enhancements, such as a monochromatic appearance, an analog meter with adjustable illumination, a low turbulence fan, and more for high-definition listening. Product only available for in-store purchase and not available for online sale. Features T150 output tubes and a bulk power supply 50 percent larger than its predecessor.
Audio Research Reference 250 Mono Amplifiers - The Audio ...
http://www.theaudiobeat.com/equipment/audio_research_reference_250.htm
Audio Research amps use negative feedback, 8.8dB in the case of the Reference 250. The use of feedback in an amplifier's circuit is controversial, with some makers (Lamm, Atma-Sphere, Conrad-Johnson, to name just a few) considering it a sin of commission.
Audio Research Reference 250 monoblock amplifiers - Hi-Fi+
https://hifiplus.com/articles/audio-research-reference-250-monoblock-amplifiers/
Audio Research Reference 250 monoblock amplifiers. REVIEW. Alan Sircom. Mar 2014. A. A. A. Coming after the outstanding Reference 75 stereo amp, I have to admit some reticence in taking on the Audio Research Reference 250 monos. The quality of the Ref 75 sound runs deep, and although these offer three and a bit times the power, there’s that nagging doubt that one little …
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