VCF-4

Switched capacitor filter

VCF-4 is a unique filter in Eurorack land. It's a switched capacitor design with a lot of bells and whistles, offering a unique sound and flexible sound-scaling capabilities.

2 x 12db switched capacitor filter core
Sweepable LP/BP/HP Mode
+BP/-BP adjustment
Self-oscillating filter
Filter linking ( 1:1, octave down, 2 octaves down )
Serial or Parallel setup possible
Resonance CV control per filter
Filter mode CV control per filter
2x Cutoff frequency CV control per filter
Big fat knobs ( 20HP )

https://www.skullandcircuits.com/product/vcf-4/