Hello, This a really dumb question. Here is the problem. It is similar to another thread so I will try to keep it short. I just got this amp and I am playing this amp in my apartment. There is a lot of hum when using this amp with single coils, is this something that I have to live with or is it a grounding issue with the electricity in my old ghetto apartment. If I touch one of the inputs of the DRRI the hum goes down a little. I have a 68 twin that is having similar although not as bad problems. There was a terrible blackout in my neighborhood for about 7 days a few months ago and I was wondering if that had something to do with these problems. Solid state amps seem to work with just a normal amount of hum from single coils. Humbuckers seem to work pretty quietly as long as I am touching the strings. Normal chanel=less hum Vibrato chanel 1=a lot of hum Vibrato chanel 2=little less hum Thanks.