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.
Can anybody help me? A friend has a got a Melos MA-111B tube preamp with a few problems and need a schematic. Been searching on the 'net but no luck so far - it seems Melos went belly-up some years ago.