• 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.

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My first project

The PSU
 

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Not exactly an amplifier...

This is based on the tube synth articles written by Eric Barbour. The dark box is the external power supply for +/-150v and heater voltage. The small silver panel is a MIDI to CV converter to drive the oscillators from either a keyboard or computer.
 

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Johan Potgieter said:
Depends on date of manufacture. There was a time in the 50s when MFD was often used, presumably because the "micro" sign was not generally available in the relevant printing processes.

Edit: Couldn't even bring up the mu-sign now!


it really looked like MEGA 😀
but then a 32 MegaFarad cap would be as big as a building I imagine,,,