Available as an assembled Module and as a DIY project.
This Module is discontinued.
Passive Voltage Controlled Attenuator/Gate Kit
https://www.tindie.com/products/acidblueFX/voltage-controlled-attenuatorgate-frac-version/#specs
Comes with everything you need to build your own module.
You can never have too many VCA's.
OK this is an attenuator, but it's fun and good for 'plucky' bell type sounds.
Low parts count, just 3 1/8" jacks, 3 resistors, one led and one optocoupler, (NSL-32).
The faceplate in the kit will fit FracRak only.
