Vacuum Tube Synthesizers

Lately The Peasant has been building a music synthesizer using vacuum tubes. Although this will be used as a percussion synthesizer, it could just as easily be controlled by a keyboard or a MIDI to CV convertor. The first module built is a dual VCO. It is based on the VCO circuit from Eric Barbour`s Phattytron, and has its own power supplies buil

t right on the chassis. Using drum sticks with The Peasant`s ribbon controller, a basic tube VCA as per Eric Barbour, and a simple diode/capacitor envelope generator, the following sounds were created. Ahhhh, the rich, full sound of tubes!

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