Hello Jim, Yes this rack is mostly sound sources and sound modifiers...I have been using the Matriarch envelopes to modulate. It also has attenuators and LFO...so what would you recommend for this rack? I was considering the ZADAR. I also have been patching all of my synths (Moog Mother 32 (3) and 2 Dfams and Subharmonicon) into a Mackie 16 channel mixer. I can record each synth separately or I can record a live performance. I use a Focusrite 18i20 and an Octopre for interfaces. I put in the 4ms Mixers in the rack for live playing. I guess that would be my "sub mix?"
BTW, I built custom racks for stacking my 5 Moog units before I got into expanding. I did not want to stack the Subharmonicon on the top so I put it in the 104 case. The Moogs sit next to this rack.
As far as sequencing, I use the Mother 32's and I also have a Keystep 37. Thank you for your time.