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Yamaha B-2

Power Amplifier (1977-79)

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Yamaha B-2


The Yamaha B-2 is the product of research directed at the ultimate in audio quality, based on a unique combination of sophisticated circuitry and advanced FET manufacturing know-how.

The B-2 joins the famous B-1 in setting the standards by which the 'state of the art' is judged.


Power output: 100 watts per channel into 8Ω (stereo)

Frequency response: 10Hz to 100kHz

Total harmonic distortion: 0.08%

Damping factor: 70

Input sensitivity: 0.775V

Signal to noise ratio: 115dB

Semiconductors: 12 x FET, 95 x transistors, 2 x IC, 66 x diodes

Dimensions: 436 x 370 x 151mm

Weight: 26kg


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Reviewed May 20th, 2018 by jamesbutenas

I bought my first Yamaha B-2 in 1980 , new and purchased a second one in 2004, used ,they both still power my reference system to which I compare basic and int. amps that I service on my bench. When they work right they are hard to beat. I put them up against both tube and solid state and there are only a few with the openness ,response and ability to handle great dynamic range. BRAVO YAMAHA



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