Ampeg reverberocket 1x12 reissue
I bought the amp in roughly 96ish and have changed the power tubes once. Lately what I have been experiencing is the volume will cutout. Plus the amp breaks up at low volumes.
It has been maybe 15 or so years since I changed the power tubes.
So I ordered new power and preamp tubes. I replaced the tubes and it breaks up worse than before. Normally this has a great clean tone and I can set the volume to 5 and it stays fairly clean with a normal string attack.
I plan to put the original preamp tubes back in and see if there is a change in sound. The original and the replacement preamp tubes are 12ax7. The new tubes were purchased from the tube store. I bought JJ tubes.
Looking for advice on how to proceed in troubleshooting this issue.