Left to Right :

Input Module Befaco Insrtument Interface V2
- is a v fleshed out interface module, Phantom Pwr for Mics, Sliders for attack and decay of envelope follower, gain, threshold for triggering envelope, inverted envelope out, its a little pricy but FULLY featured. it will be vital to getting CV signals out from drum hits and audio in from Mics.
So
IF
you want to have acoustic drums mixed into FX (delay, filter, phaser, bitcrush etc) AND have said mic's signal produce a Controlled Voltage Envelope, which can then be used to modulate a desiered parameter in the system then this module will be the gate way. So just 1 to start, 3 at fin? good to keep that in mind, 2 def, but three depends on goal and level of dependance on external mic for system control.

Next UP:

Ya Boi Sound Scraper,
It takes 5v so you NEED TO READ UP ON 5V AND DOEPFER A100 5V CONVERTER, but he wild so net to him is a filter to tame, Envelope, trig rev env from Beface InputV2 can be used to treat sound scraper as an instrument struk from befaco which in turn has been struk from Mic which was presumably struck by you. Again just pointing out this direction is SANS sequencer, as you and the striking and mics are all apart of using the synth. aside from Sound scraper Droning and filtering, LFO madness, etc.


so is your idea to use this for processing an acoustic drum kit?

I think it might be a good idea to start with a single channel, add some effects and then add channels...

so there seems to be stuff missing - filters, effects, modulation sources, utilities that are needed to get the best out of them...

take a look at my signature - substitute mic input for sound source and spend a decent amount of time thinking long and hard about it...

also spend at least the same time thinking about using a regular outboard mixer and some effects pedals and or rack effects... or a multi-channel audio interface and a laptop - both will get you most of the way to where you appear to want to go for a lot less money...

"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia

Utility modules are the dull polish that makes the shiny modules actually shine!!!

sound sources < sound modifiers < modulation sources < utilities