Hi Stefvan, i confirm im planning to use this system with a DAW as an external audio and MIDI source and with a MIDI keyboard as an alternative MIDI source for a more hands on approach.
Thanks for pointing out the overabundance of mixers, thats because i never worked with stereo audio signals and since i would like to process and mix in the final output both the oscillators and the processed external audio at the same time i thought a certain amount of stereo mixer channels were required, but i inserted too many.
I think im still gonna keep a pair of stereo mixer channels since the quadratt (intelijel 1U quad mixer and attenuverter) doesn't look like the best module for mixing stereo signals ( it has individual amplitude controls for every mono channel so maybe that could bring some light imbalance between the Right and Left signal of a stereo sound, does it makes sense to you? Thats another thing im not entirely sure of).
About the mono/stereo compatibility between modules: thanks for explaining it to me, so if i want to use a mono module i have to exit from the previous module with a mono signal!
Still i don't understand how a mult could get a double L+R input into one output, i thought they are just replicating the signal inserted in the first patch point: are you saying they can mix 2 signals in a single output like in a mixer?
I thank you again for your thoughtful reply and advices, sorry for asking even more beginner questions as a response!