• THYRATODE is a peculiar VCO based on Metasonix R-55.
• THYRATODE is sold individually and as part of Tube Bundle.

It produces the notorious “sharkfin” sawtooth waveform of thyratron VCOs, replete with the weird pitch variations and apparent “noisiness” of a thyratron oscillator and a "sinish" waveform derived from it. Turn up the overdrive control, and the oscillator output clips the output amplifier pentode tube, for a unique soft-clipped square-wave sound. The simplicity of the THYRATODE will fool you--its behavior is erratic and weird, it always sounds “broken”, and the waveform is “deviated” in every way. You don't even need to feed it Hz/v CV: just run a square-wave or pulse signal from a conventional VCO into a pitch CV input, and it will “force” the THYRATODE to track along with the other VCO. However a switch to select for V/Oct has been added plus an Offset control knob with related CV Input and VCA to further manipulate the sound. Maximum output signal, 20 v p-p.