Thanks all. I do not have any technical experience with amps although I can and have replaced components. Can anyone explain to me how to find the items you mention: feedback loop resistors and capacitors; plate, grid, cathode, feedback resistors, and others. I have the circuit diagram with all labels and voltages, but I don't know which components are the above mentioned items. Many thanks again, I would love to keep these amps!
Luxman 3045 mb
I have these wonderful Tim deParavincini designed amps from I believe the early 70's. Anyone out there have experience with upgrading, moding, servicing. I switched to KT 88 output tubes 10 years ago.