I had tubes installed last year in my '68 Vibrolux. I noticed today that the power tubes had silver spots on either side of each tube. I'm kind of angry as I paid a tech to bias the amp.
The amp wasn't played much at all after they were installed. The tubes are/were strong GE 6l6s.
Anything to worry about?
The amp wasn't played much at all after they were installed. The tubes are/were strong GE 6l6s.
Anything to worry about?