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Sansui AU-D11

Integrated Stereo Amplifier (1983-84)

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Sansui AU-D11


The remarkable new Ground Free Circuit encompasses every advance in amplifier technology, including Diamond Differential DD/DC and Super Feed Forward circuitry.

Together these technologies result in amazingly natural, life-like sound reproduction, making the AU-D11 perfect for new digital sound sources.

Moving-coil transformer featuring a high signal-to-noise ratio Record selector. Bi-directional tape dubbing facilities for two tape decks. Selectable turnover frequencies for bass and treble. Push-button input selectors with LED indicators


  • Power output: 120 watts per channel into 8Ω (stereo)

    Frequency response: 20Hz to 20kHz

    Total harmonic distortion: 0.005%

    Damping factor: 150

    Input sensitivity: 0.1mV (MC), 2.5mV (MM), 250mV (line)

    Signal to noise ratio: 74dB (MC), 90dB (MM), 110dB (line)

    Channel separation: 60dB (MM), 50dB (MC), 80dB (line)

    Output: 250mV (line)

    Speaker load impedance: 8Ω (minimum)

    Dimensions: 445 x 163 x 443mm

    Weight: 17.5kg

  • Power output: 130 watts per channel into 8Ω (stereo)

    Frequency response: 20Hz to 20kHz

    Total harmonic distortion: 0.0028%

    Input sensitivity: 0.25mV (MC), 2.5mV (MM), 150mV (line)

    Signal to noise ratio: 80dB (MC), 90dB (MM), 110dB (line)

    Output: 150mV (line)

    Speaker load impedance: 8Ω (minimum)

    Dimensions: 466 x 161 x 431mm

    Weight: 17kg


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re: AU-D11

The eu production model is different from the unit in the service manual. R63 and R68 (10K) are replaced with wire bridges. This lowers the output voltage of the psp to 52/54 volts. This introduces aproblem with the output transistors Q31 and Q40 getting really hot and dropping out after a couple of years. Replace the transistors Q31/Q40 and Q33/Q42 with MJE15032/MJE15033 and the wires bridges with 6K8 resistors. The amp can handle the increased voltage and the transistors wil live a lot longer.

forgot the rating, must be a 10+ on sound quality, build is a bit less !!!

re: AU-D11

Hi, thank you for this important bulletin. But does this apply for which EU version?
The AU-D11 (1981) or the AU-D11 II (1983) ?

Thanks a lot.

BluesRoad's picture

re: AU-D11

I´m looking for this one

sansui au-d907f

hi every one
i've downloaded and used au-d11 schematic and i've understood that it's the same with au-d907f but i believe in some differences.can anybody help me to find au-d907f service manual?


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