J joafink2 Active member Jun 16, 2020 #1 I just fired up my amp and I am getting high pitched feedback on channel 2 only. Bad preamp tube? Any ideas which one?
I just fired up my amp and I am getting high pitched feedback on channel 2 only. Bad preamp tube? Any ideas which one?
Peter Diezel Well-known member Jun 16, 2020 #2 Check filter caps. Service manual on www.diezelamplification.com Best, Peter
