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.
The GE transformer is great. It is very quiet. I only hear it slightly when my ear is within a foot away. This is a MUCH better solution than the step-down transformers that I was using before.