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.
Dear members, Hi have got an OLSON am-158 in a flea market and I don’t know if it’s a good hifi amplifier. Can somebody give me some feedback on it.... and do you know if there is a schematic available somewhere for me to work on it eventually.