The VCF-2 is a fun little 12db filter, easy to build and use and sounds darn good.
- 2 CV inputs with their own attenuator
- Low pass and High Pass mode
- Smooth resonance control
- 12db slope.
- All through hole build, easy to repair or modify if needed.
- Open source schematics so anyone with some knowledge about electronics can fix it if needed (of course I can as well, but who knows in 50 years..)
- Designed to last
Links and documentation