My Laney GH100l is making a really strange hissing sound when both the gain and drive channels go at the same time. I have the gain at full and the amp starts making a hissing sound when the drive is anywhere above 5 1/2. Anywhere above 5 1/2 and it starts hissing really bad. I have no clue what it is and I feel like I'm damaging it when I do that. Anyone know what this is?
It's definately a
