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Sansui A-80

Stereo Integrated DC Servo Amplifier (1980)

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Sansui A-80


In the A-80, DC-Servo means sound that's pure as pure can be these days. All stages inside the power amplifier are direct coupled. All capacitors in the signal path are eliminated. We've added nothing, thus lost nothing.

There are no capacitors used that can add harmful colouration to music. No wonder sound is exceptionally clean in the A-80. The DC-Servo controls ultra-low-frequency signals (all those below 1 Hz) so that they can't reach your speakers. Which means you can, if you have to, play warped records and still hear good sound.

Power output is a comfortable 65 watts per channel both channels driven into 8 ohms, all this from an OCL (Output Capacitor-less) true complementary circuit with a DC-Servo system, built around a dependable op-amp (operational-amp) IC, for good, clean, dependable performance.


Power output: 65 watts per channel into 8Ω (stereo)

Frequency response: 5Hz to 70kHz

Total harmonic distortion: 0.05%

Input sensitivity: 0.1mV (MC), 2.5mV (MM), 150mV (line)

Signal to noise ratio: 60dB (MC), 80dB (MM), 95dB (line)

Output: 150mV (line)

Speaker load impedance: 8Ω (minimum)

Dimensions: 430 x 147 x 251mm

Weight: 7.1kg


schematics   English -

brochure   English - danickd

service manual   English - maponso

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Reviewed Feb 02nd, 2015 by guest

The A-80 is not a beast of a amplifier like earlier Sansui offerings. The case sports plastic sides and a Masonite bottom with a metal top. On the up side the internals look of quality and a thoughtful circuit lay out with a steel chassis and a very nice aluminum faceplate. Sound is very subjective but if I had to describe it I would say it has a clean detailed sound. Mine just required a general deoxit and cleaning. Their is no relay and on power down it generates a low gentle thump indicating the caps are in good condition. I have had it for a couple weeks now and am really enjoying it. If you find one reasonably priced I would say buy it you won't be sorry.

Reviewed Oct 31st, 2014 by Reven98

I have two amplifiers, Sansui A-80 and Marantz 4270 Receiver; and doing a comparison, the Sansui has the more clear sound and high frequencies reproduction, I was surprised indeed!. I recommend this amplifier for its fidelity and beautiful look.

Reviewed Oct 10th, 2014 by krol

looks so lovely! meter and display wow!, sound very good for age. clear maybe to clear sound! depend of taste.



re: A-80

I used to have this unit long time ago and remembering that I enjoyed playing so good music with it on my High School years. A month ago I bough a similar unit on ebay with some issues. Thanks to HFE I got the schematics and after some time I was available to fix it. I could not believe how exquisite is the sound produced by this amplifier. I did some extra research and order all set of new capacitors using premium components. They will arrive next week so I am looking forward for the upgrade

re: A-80

thank you -- helpfull

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