I plug my guitar into my marshall g100r cd head, a solid state, and it comes out muffled. I also plug it directly into my M-audio fasttrack usb and it sounds muffled there. So I took it and got a new tone knob, my guitar is an sg with one pickup. I got it back and it still was muffled. finally I try my bass which has hardly been use and in a yamaha good quality and it sound muffled too, in both my amp and line int straight in to my fasttrack. I found out the fast track is kind of a piece of junk so it just makes everything muffled including vocals. So I guess that leaves my amp. I got really drunk at a practice and turned it up too loud. Nothing seemed to have happend but a few weeks later I found it had a muffled sound. Can you blow out the tone in a amp? and If I did should I just accept it and buy a new one?
any chance it's the lead your using?
those amps have had some quality issues so your last question is the answer.
ya blew it
The amp is blown, but when buying a new amp do not buy the same one.