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ax-390

  1. 7367ruffles

    Yamaha AX-390 has an audible hiss on both channels.

    Hello AKers, I have a Yamaha AX-390 stereo amplifier with a rather annoying problem. There is hiss from the speakers, equally loud on both channels and affected by the balance knob. When I crank up the treble knob, the hiss gets louder. Turning up the volume knob also makes the hiss louder. The...
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