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SoundStage! Equipment Review - Audio Research Reference ...
http://www.soundstagenetwork.com/revequip/audioresearch_ref2mkii.htm
The Reference Two Mk II is a large single-box fully balanced preamp measuring 19"W x 7"H x 15 1/2"D and weighing 31 pounds. Audio Research-supplied specs are impressive: .5Hz-60kHz frequency response, less than .015% distortion, noise …
Audio Research REF2MKII | Tube | Audiogon
https://www.audiogon.com/listings/lisa6hcg-audio-research-ref2mkii-tube
REF2 MKII: +0 -3dB 0.2Hz to 60kHz at rated output. (Vol at -28dB, 200K ohms load). DISTORTION (THD) REF2 MKII: Less than .006% at 2V RMS Balanced output. NOISE & HUM REF2MKII: Main output (SE or BAL input): 18dB Balanced output, 12dB Single Ended output. Tape output: 0dB. (Processor input: 0dB Balanced. Aux 1 input: 13dB Balanced.) INPUT IMPEDANCE
Audio Research Reference 2 Preamplifiers user reviews : 4 ...
http://www.audioreview.com/product/amplification/preamplifiers/audio-research/reference-2.html
I have recently upgraded from the LS25 MkII to the REF2 MkII. Reviews of the REF1 and REF2 MkI preamps are really not relevant as the MkII is essentially a completely different preamp. Same issue with LS25 MkI vs. Mk II. First; Audio Research's Ref2 MkII is the finest preamp that I have heard in my system.
Audio Research REF2 MK 1 Vs. MK 2 - Audiogon Discussion Forum
https://forum.audiogon.com/discussions/audio-research-ref2-mk-1-vs-mk-2
The REF 2 MK II has 6) 6H30's, 1) 6L6, and 1) 5AR4. The only reason for a "tubey" sounding REF 2 MK I is "tubey"(microphonic) tubes. If the tubes are rolled for accurate/transparent, NOS 6922's, the sound will be also. Siemens and Telefunken CCa's will both provide a clean, accurate, non-tubey presentation.
Audio Research Reference 2 mkII Stereo Preamplifier in ...
https://www.audiogon.com/listings/lisad34i-audio-research-reference-2-mkii-stereo-preamplifier-tube
Audio Research Reference 2 mkII Stereo Preamplifier in excellent condition | Tube | Gainesville, Florida 32609 | Audiogon. Audio Research Reference 2 mkII used This listing is for a one owner Audio Research Reference Two MKII Stereo Preamplifier in its correct packing with remote, manual and power cord. In excellent condition, no dents or dings.
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