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.
Are you absolutely sure they're made in China ?
I thought these were made in Tchekia but I'm not 100% sure.
The idea is not new but was reintroduced by Alesa Vaic (former Tesla engineer)
> guess you'll even be more confused afterwards <
From what I understand they're all individually branded for their respective distributors.