I got this filter from a fellow designer. It’s still in the prototype fase and I’m one of the lucky ones to test it. It’s a really nice filter. It resemble the MS-20 filter when listening to it. It have to double check with Budgie is it’s based on that design. It has low pass, band pass and high pass output’s. It can overdrive the resonance quite a lot. I like this one and when it hits the stores be sure to check it out. Don’t know exactly why it’s call Greenfinch but I think Budgie names it’s modules after birds.
Difficulty to build: Medium, no manual yet (prototype)