• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

QB4 in triode

I just picked up a Philips (Holland) QB4/1100

What would be a good sounding OP in triode?



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