• 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.

Heathkit AA20 preamp schematic

Greetings fellow audiophiles. !!!!

I am about to restore a Heathkit AA-20 preamplifier and cannot find schematics
anywhere. I ordered a manual for an AA141A but would love to get the actual schematics for an AA-20. If anyone could send me a info/link on where to acquire I would be most grateful....

Cheers

Eddy