Here's another amp that really shouldn't have been working at all . . . filled with cold/cracked solder joints, bias cap installed backwards(!), several miswired sections etc. I rewired the amp correctly, though I did remove the "choke input" power supply circuit, as the choke used was a regular 40mA.
We also installed a Peavey Valverb tube reverb/tremolo rack into the cabinet, and integrated it into the existing amp circuit for ease of use. This involved sawing the rack and circuit board in half and remounting the original tank into an old Accutronics shell.
