- Jun 5, 2012
- E. Tennessee, USA
The thread title pretty much sums it up...my newly acquired Excelsior occasionally shifts from a nice clean tone to an unusable garbled/distorted mess...then a bit later (if I stay with it) it goes clean again. I had some pre-amp tubes, so I switched them out--no change. I'm thinking about ordering new power tubes. I also tightened all the screws. I really do not want to send it back.