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 SET is a Simple 2A3-style 6B4G with a slightly lower b+ around 305v, with Hashimoto HC-203U wired to the 3.5k primary and 4 ohm output. I understand those OTs are bassy as well.
