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.
Hi, if i want to add a presence control on a single ended amp, i have to put a single tone circuit at the final gain stage ? after the tone stack section ? anybody have a sugestion .....
