Post

Frap Tools 321 is a treat for mixing, shifting and attenuverting.

https://www.modulargrid.net/e/frap-tools-321-
-- bhenry1790

My take on it would be to look at a Happy Nerding 3x VCA, actually. This would give you the CV mixing, attenuverting, AND three linear, DC-coupled VCAs to have CV over your modulation, etc levels. Drops right into that 6 hp hole, too. And if needed, you can split out one or all of the VCAs. The Frap 321 is also a good drop-in choice...it all depends on how you want to do your CV/mod mixing and control and how much control you want vs. what you want the synth to have control over.
-- Lugia

Thanks for the pointers guys -- these are nice alternatives I hadn't considered. With this setup I don't really feel that lack of VCAs -- all the voices have their own amplitude envelope -- so the main use would for modulating some other CV signal. This is intended to be a very hands on, playable system, and in particular I want to be able to switch from the DFAM being the main drums to the BIA being the main drums and back without stopping the music and ideally without repatching anything. For this a lot of manual control is needed.

So the Frap 321 is closer to what I am looking for. However when looking at the Happy Nerding 3xVCA I also discovered their 3xMIA which is even better! It seems to do everything the 321 does, with more inputs, more usable output options, and (major plus) all the jacks are at bottom of the module.

Versus the Befaco, the main advantage of 3xMIA seems to be more channels (also : cheaper); the disadvantage is that it can't be a ring modulator.

Any other thoughts?