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.
A reference amplifier for me is an amp that achieves the required voltage and current gain with the least amount of gain stages, while still providing a reasonably good specification. I also appreciate short & DC-coupled signal paths, ...
