Audio Research D250 Review

Audio Research D-250 II Servo power amplifier ...

https://www.stereophile.com/tubepoweramps/413/index.html

Audio Research Reference 250 SE Amplifier - The …

https://www.theabsolutesound.com/articles/audio-research-reference-250-se-amplifier

Audio Research REF 250 Monoblocks – Reviews | TONEAudio ...

https://www.tonepublications.com/review/audio-research-ref-250-monoblocks/

Power output meters are just cool. Back in the late 80s when the legendary Audio Research D-79 amplifier stood as my system’s cornerstone, watching the meters bounce into the red “caution” area—as the SPL got somewhat out of hand—made me feel like a mad scientist in a Mothra movie, waiting for sparks to fly.

Audio Research Reference 250 monoblock amplifiers - Hi-Fi+

https://hifiplus.com/articles/audio-research-reference-250-monoblock-amplifiers/

Audio Research has never been a great proponent of low or no negative feedback in its power amp designs (because you sacrifice output impedance and damping factor, as well as generally giving better measurement on the bench), and the Reference 250 is no exception, with a healthy 8.8% global feedback across the circuit.

ARCDB

https://www.arcdb.ws/model/D250

The Audio Research Database (ARCDB) provides information about past and present products from ARC (Audio Research Corporation) The Audio Research Database (ARCDB) provides information about past and present products from ARC (Audio Research Corporation) ... Full Review) Issue 50 (D-250 MKII Servo: Capsule) Vol. 7 No. 8 (D-250 MKII) Vol. 9 No. 5 ...

Audio Research D-250 Stereo Power Amplifier Manual | HiFi ...

https://www.hifiengine.com/manual_library/audio-research/d-250.shtml

mkII. Power output: 240 watts per channel into 16Ω (stereo) Frequency response: 20Hz to 20kHz. Total harmonic distortion: 1%. Damping factor: 20. Input sensitivity: 0.8V. Signal to noise ratio: 90dB. Valve complement: 12 x 6550, 2 x 12AT7, 4 x 6DJ8, 4 x …

Audio Research D240MK - Vintage HiFi Club

http://www.vintagehificlub.com/quick-informations/audio-research-d240mk/

Power output. 120 watts per channel into 8 ohms, 240 watts per channel into 4 ohms. Power bandwidth. 8Hz to 60kHz (-3dB points) Frequency response. Input sensitivity. 1.6V RMS for rated putput (25.8dB gain) unbalanced or balanced. Input impedance. 150k ohms normal or invert, 300k ohms balanced differential.

Audio Research M300 monoblock power amplifier ...

https://www.stereophile.com/tubepoweramps/585/index.html

Audiogon Discussion Forum

https://forum.audiogon.com/discussions/audio-research-d200-or-new-rotel-1080

Audio Research D200 or new Rotel 1080. The price is the same for these two amps. Is the Rotel in the same league as the older AR D200? I have a chance to buy a D200 in excellent condition but I am unsure because of its age. …