I play through this amp at church. I've never been able to get a nice tone out of it, and last night I had some time before practice to fiddle with it. I noticed that the speakers appear to be out of phase. I'm assuming this is not supposed to be, but I wanted to make sure. One cone goes out, the other goes in. I haven't pulled the speakers out to see if one is disconnected. Hopefully it is, and it's not just a dead speaker. Someone broke the ground pin off of the power cable, and the input jack is loose. I'm planning on bringing it home next week and giving it a little TLC.