Whats new - Audiokarma Home Audio Stereo Discussion Forums I have a Sansui AU 888 that has hum on both speaker outputs I am seeing 1 2 V on both right and left speaker terminals The right channel pre-out works fine when plugged into a separate power app but the left channel is showing 10 to 20 V off the left preout jack while the right channel output check is showing 2 mV