Hi!
Actually I'm making my guitar amplifier. It has 2 channels + booster. Clean - Bandmaster, Overdrive - AC30 and booster - EF86. I've wired ?power amplifier? (I'm sorry, but I don't know how to call it in english), phase inverter, tremolo and booster. The problem is that sometimes amp makes strange sound, even if booster is unconnected. I've recorded it:
http://w991.wrzuta.pl/film/6y4KHOpvUgM/wzmak
When I disconnect jack on the back of amp i turn tremolo off. Guitar is connected. Do You know what is the reason of this problem?
Sorry for my english