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.
Anyone tried the 99 upgraded to Super Magnum version? In case so was there any benefit in doing so? What exactly did the upgrade do to the "sound"? And can you diy?
