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Audio Research Reference 75 power amplifier | …
https://www.stereophile.com/content/audio-research-reference-75-power-amplifier
Weighing only 47 lbs, the Ref 75 is the lightest tubed stereo power amp I've had in my system. One aspect of the Ref 75's design particularly intrigued me. Some audiophiles hold that a single pair of push-pull output tubes is capable of greater sonic purity than multiple pairs of tubes, which, when ganged, can create a subtle smearing; because tubes are never precisely …
Audio Research Reference 75 power amplifier …
https://www.stereophile.com/content/audio-research-reference-75-power-amplifier-specifications
Audio Research Reference 75 power amplifier Specifications. Description: Tubed power amplifier. Tube complement: four KT120, two 6H30. Maximum output power: 75Wpc continuous, 20Hz–20kHz (18.75dBW into 8 ohms). Total harmonic distortion (1kHz): typically 0.6% at 75W, <0.05% at 1W. Power bandwidth: –3dB, 7Hz–60kHz.
Audio Research Reference 75 review | What Hi-Fi?
https://www.whathifi.com/audio-research/reference-75/review
The Audio Research Reference 75 is the baby power amplifier of the company's top range and is intended for those who want top-quality sound but don’t need any extra power. (Those that do need the oomph can have the likes of the range-topping Reference 750 monoblocs, which output a spicy 750W and sell for an equally spicy rather hefty £27,500 each.)
Audio Research Reference 75 power amplifier …
https://www.stereophile.com/content/audio-research-reference-75-power-amplifier-measurements
The Audio Research Reference 75 measures well for a classic tube amplifier design with a single pair of output tubes for each channel and a modest degree of loop negative feedback. Its output transformers are also of good quality, the only proviso being that the amplifier should not be used with loudspeakers whose impedance drops significantly below the nominal value of the output …
Audio Research Reference 75 power amplifier
https://www.audioshark.org/industry-news-153/audio-research-reference-75-power-amplifier-732.html
The advent of the more powerful KT120 provides the opportunity for avoiding this potential problem because two KT120s can replace four 6550s or EL34s in push-pull topologies. The Ref 75 also sports a pair of VU meters, which give the amp a bit of the vibe of ARC's classic D79 amplifier, from the 1970s.
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