This Module is currently available.
Diode Ladder VCF
Think of this as the bigger, uglier sibling of the MS20-style YAMS filter - it's bigger, badder, squallier and has voltage-controlled resonance too.
It's built around the really rather splendid LM13700 operational transconductance amplifier. There are also a lot of diodes (14 of them, to be precise).
Eagle-eyed viewers will notice a pair of trimmers on the back of the board - these control the cutoff offset (response when cutoff pots are fully CCW) and the V/oct response for the cutoff frequency. Out of the box you may need to tweak these until you get a response you like.
Works best with square or saw-based waveforms.
https://www.yorkmodular.co.uk/products/diode-ladder-vcf-pcb-panel-set-8hp
