I've mentioned this problem before: I have a fairly new Peavey Classic 30. I upgraded the speaker and the preamp tubes. It works ok, but I can't quite get out of it exactly what I'm looking for. I have experimented with tone controls for weeks. I have the mids up a little past half way. It perpetually sounds a bit muddy and doesn't cut in the mix. When I turn the treble up to where I feel it 'should' be, I get a terrible, brittle/fuzzy sound from the drive (if I use a pedal or if I use the amps drive... same difference). So I end up running the treble about mid way, and I have the mud issue. At one point, a power tube blew. I replaced it with a new one sent to me by Peavey. But I am sure my power tubes are mismatched now. I didn't own the amp long enough to know if that makes a dramatic difference or not. Like, I don't remember if the amp sound great before the tube incident because I had just gotten it. I have exactly $50 to spend on the amp right now. I can either get a new quad of power tubes (ticks me off since the set in there is perfectly new, but not matched). Or I can get an EQ pedal (prob GE7, or the like) to run in the loop. I've never used an EQ pedal like this (to try and dial in an amp's main tone). I've only ever used them to boost solos or something. So which should I do first?