Ok, I have two model 75's one is perfectly quiet and the other has some hum. I have one input on each amp that uses the 12AY7 and one input that goes to the Ef86 so that I can use the input I need.
One of the amps I have to turn the 12Ay7 input up just a little to null the noise. The other amp doesn't have this problem.
Any ideas?
One of the amps I have to turn the 12Ay7 input up just a little to null the noise. The other amp doesn't have this problem.
Any ideas?