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The one I just got is filthy and not working, but I will clean it and have my fantastic repair guy bring it back to life!
Here is a description from an ad on Audiogon:
The epitome of perfection in 1970s solid state integrated audio amplifiers. This is one of Sansui's best, with every feature for the discerning audiophile who desires that warm, almost tube-like sound from a solid state amplifier.The AU9500 is conservatively rated 75WPC continuous into 8 ohms, 20Hz to 20kHz, with less than 0.1% THD, with a true bandwidth of 4-40Khz. It is powered by a large power transformer with seperate windings and power supplies for each channel with complimentary, parallel, push-pull output circuitry, using four output power transistors per channel.
I can't wait to hear this!