Available as an assembled Module and as a DIY project.
This Module is currently available.
Polivoks-ish VCF with overdrive and resonance boost
The Brutalist is Polivoks-ish style VCF. CV 1 is attenuverted, CV 2 is a standard attenuators. CV 2 is 1v/o(ish) at full CW. The overdrive switch and resonance boost switch can bring it into some super ugly sonic territory.
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