I've got a Boston Acoustics GT-50 5 channel amp that started making/causing a LOUD hum. The hum won't go away with a change in volume. I used to be able to make it stop by wiggling the front input wires at the amp, but now that doesn't work. I can get it to stop if I turn the Highpass off, but then everything sounds like crap...I've got a Sony HU and a HSE volume control. Nothing fancy...
Anyone have any suggestions? Thanks!