I just finished my first project. An all tube SE kt88 guitar amp with reverb. When I turned it on everything sounds fine, but when I turn the master volume above one quarter it starts to produce some audiable high frequency oscillation through the speaker,and a moment after that something starts to hiss in the amp head (I think it is the OT). I also noticed that if I turn the reverb full on, and the master volume just below the oscillation, then if I turn the reverb lower it starts to oscillate again.
Any ideas?
Miha
Any ideas?
Miha
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