Available as an assembled Module and as a DIY project.
This Module is currently available.
Wavefolder / VCA / fuzz
This module started out as an attempt to develop yet another chaos circuit by linking different nonlinear sub-circuits in series, from Chaotic Oscillator Based on Delay Line - Milan Stork. Then I noticed it was folding the waves at different offsets and kind of got diverted into developing a wavefolder.
It is similar in concept to other diode based wavefolders out there, but as this one uses two different nonlinear stages (twice each) rather than the same circuit 4 or 6 or 8 times, the folding is more complex, unbalanced and well, not very neat. What does this mean? It can be noisy
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These merchants probably sell this module. Huh?