You won't believe this but today the store owner gave me one of those little gray adapters that goes from a three way to a two way for the plug with the little loop for a srew for a ground. You guys know what I'm talking about. Needless to say I laughed all the way home. I plugged the amp in when I got home and sure enough the buzz was still there. So I pull the plug out and put the little adaper on and plugged it in. Believe me there wasn't a sound. The buzz completely disappeared. If you have a buzzing amp try this out and see if it works on your equipment. This would be good to remember.