So I know this is an old topic but I forgot all about this and was just lurking when I saw my old post.
The problem was cone cry! Put an EV in it and it sounds amazing!
It is a combo and I don't have another guitar or cab to try. I've used several cables and no change and I've gone direct and taken everything out of the loop and no change.
Its probably best to just take it to a tech eh?
It happened before the power tube swap. Some of the pre amp tubes were bad when I got the amp so I switched them out and the amp sounded much better but had the weird high end issue so I swapped out the power tubes thinking it might be that and no change. I checked all the pre amp spots with...
So this is my very first tube amp and while I've been pretty happy with my purchase there is something wrong when I play notes after the 12th fret on the higher gain channel especially when bent.
It's like there are multiple notes running together and its like a weird muddy modulation mess. It...