Solid State Amps
51weezy wrote:Hey amp guys, I got an Acoustic Control 320 bass head that's making a low rumbling noise. I can play through it fine/everything works, except the power rocker switch is broken (amp is permanently on). Otherwise there's just the weird rumbling.I am going to open it up tomorrow to look at the switch, I don't know where to look for the noise...Most likely power supply caps filter caps. Replace them.