In the studio I use Cubase as DAW, and a RME Hammerfall soundcard, with 3 ADAT pipes connected. This gives me 24 IN/OUT (I use the Behringer ADA8200 pres, they are cheap, and sound decent enough for my use), in addition to this I use overbridge on the AR and A4. This way I have managed to not using a mixer at all, and still being able to multitrack all my gear realtime - and thus getting rid of the big old 02R we used before.
Live we now request one DJmixer, and just connect:
AR + A4 to the inputs of the OCT and go straigth to one channel on the mixer. (So that I can PFL via the Octa), and the other channel on the mixer has TR-8, TB3 and ES-2 connected, hubbed via TR-8 and some joining cables. - We used to carry a mixer around (Line6 M20d), which was great sounding and all that - but since we donāt use any live instruments / live vocals now weāve dropped it in favor of portability and a quicker soundcheck / setup time.
We also just added a iConnect Midi 4+ (or whatever the name is), to do the midi routing through - which is great since we can hook something like the old Korg Nanofaders to it and use those to control the octa volume, and also use the Midi Designer APP on an iPad that i programmed to trigger different sections of the setup. This means that we have the Dark Trinity clock synced, but not program changing eachother, but I can do that via the iPad for parts of the live where itās nice that they play the samme patterns (like for instance AR can be on A02, Octa on A04 and A4 on B03 and I can click a pad i made on the iPad and they would all jump to and launch A05 - or something like this. This is also nice, since you can label on the iPad for reference)
Not sure this helps and isnāt really that much on topic - but maybe it gets some people some ideas
Much love
Vegard