FutureBox: DIY analog filterbox

This filterbox was made for Futurewave. It is a dual unit with 2 types of filters, in a desktop format.

- Minimoog Model D VCF, with CV in
- EMS VCS3 type VCF, with CV in
- 2 LFOs, for each filter, with speed select switch, and modulation amount
- 2 fuzz/distortion unit, for each filter, with bypass switch
- 2 preamps, with overdrive
- mixer
- filter bypass switch