Magpie Modular repanel for Non Linear Circuits- Fk1t VCF
This has a core based on the Korg FK-1 pedal, which is a similar VCF to the ones found in the 800dv, 770 and 700 synthesizers. These VCFs have low pass and high pass stages in series. The main difference is this version uses vactrols as the variable resistors.
Andrews work at NLC is some of our favorite in the sDIY world. NLC are designed with non linear mathematics concepts in module form allowing you to play with chaos directly.