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Sansui AU-6900

Integrated Stereo Amplifier (1976-77)

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Sansui AU-6900


The AU-6900 is a stereo integrated amplifier with the technical performance and tone quality you expect of Sansui equipment in this medium-price/medium-power.

The amplifier has substantial power to drive two pairs of speaker systems, for clear, distortion-free total music reproduction, and the full range of controls.

Features include:

Triple Tone Control: bass, treble and midrange.

Direct-coupled true complementary OCL output - 4 power transistors per channel in parallel push-pull.

Tape play/dubbing control for two stereo tape decks.


Power output: 60 watts per channel into 8Ω (stereo)

Frequency response: 5Hz to 40kHz

Total harmonic distortion: 0.1%

Damping factor: 80

Signal to noise ratio: 90dB (line)

Channel separation: 50dB (MM)

Dimensions: 430 x 132 x 340mm

Weight: 12.9kg

Year: 1976


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Reviewed Nov 11th, 2019 by discofan

Awesome amp. Pretty deep and fast bass (thanks to damping of 80) and crystal highs. Sounds warm and great at all. I have it for about ten years. Bought it from first owner in like new condition with all rubber caps in original box and 100% original inside. I listened it with SABA 60L, Celestion Ditton 15XR, Coral CX-5 MkII, Universum System-6000, Fisher Studio Standard STE-1070. With all of them it sounds great. It's really superb amp and quite rare.



re: AU-6900

Dear Sirs,
first of all thank you so much for this great site.
Then i have a friend willing to sell me his au-6900.
From what i understand it is quite rare. The au-7900 seems much more common in comparison.
But i do not know if it is a similar design or not.
I would like to understand if it is really so good sounding as my friend sustains.
I like amps able to reproduce a nice 3D soundstage, with the right recordings of course.
Of all the features the 3D effect is the one that amazes me most.
Thank you all very much for your advice.
kind regards,
gino _Italy

Urbano Cappetta's picture

re: AU-6900

Thank you, finally I found the scheme, I can now safely revise this great amplifier . Greetings from Troia , a small town in the province of Foggia , Italy . Thanks again.

This website is not affiliated with or sponsored by Sansui. To purchase AU-6900 spares or accessories, please contact the company via their website or visit an authorised retailer.