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Sansui AU-7500

Stereo Amplifier (1973-74)

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Sansui AU-7500


For over a quarter of a century, Sansui has been building Hi-Fi audio equipment, and nothing else. Our mission is very old and at once ever new to us: to bring the reproduced sound closer and closer to the original.

The Sansui AU-7500 is one answer from us to this never-ending quest. It is a product of the cream of sophisticated modern audio-electronics know how, coupled with our long experience, and as such, we present it to you with our full confidence.

The AU-7500 is a new breed of Sansui's AU series integrated amplifiers. It's tone quality has been polished and perfected through an unprecedented number of listening tests in different acoustic environments.

We feel certain that you will like it, but you will find this out as soon as you play your first record through it.


Power output: 32 watts per channel into 8Ω (stereo)

Frequency response: 10Hz to 30kHz

Total harmonic distortion: 0.1%

Damping factor: 40

Input sensitivity: 2.5mV (MM), 100mV (DIN), 100mV (line)

Signal to noise ratio: 75dB (MM), 80dB (line)

Output: 100mV (line), 30mV (DIN), 0.8V (Pre out)

Speaker load impedance: 4Ω to 16Ω

Semiconductors: 38 x transistors, 15 x diodes, 1 x zener diode

Dimensions: 140 x 440 x 322mm

Weight: 12.7kg


operating/service manual   English - royhage

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colin44ct357's picture

re: AU-7500

Good Day
Does anyone have one who is willing to take the bottom cover off and send me a jpg of the wiring to the small preamp power supply pcb, there are 4 wires on the output of the pcb which have been removed, think it is faulty and they were using the unit as a power amp as there are links between pre and power amp.
Power amp 100%, preamp dead as one can expect with wires off!
Kind Regards.

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