Is it possible for a higher channel count than 24 channels in CC mode with the MADIFace Pro? If I use, for example, 4 XTCs for around 32+ channels connected to my MADIFace, can I get 32+ accessible channels?.
Depends what you have in mind with "accessible". You can record & playback max 24 tracks to/from the iPad, but in TotalMix you have access to all 64 MADI channels + the 4 analog channels - for mixes, monitoring, FX, routing any channel to/from MADI i/o and so forth. On newer iPads with USB C port you also can utilize the ARC USB as you would on Mac or PC via any USB-C hub.
So: TotalMix-wise you get exactly the same functionality as you get on Mac or PC, you can even exchange .tmws workspaces between TotalMix on iPad and Mac (probably also PC, this I didn't try). Only Rec/Playback to/from a DAW are limited by the capabilities of iPad / iOS.
Edit: I assumed you use the Madiface Pro on an iPad, but you didn't mention that. Sorry - if you run the interface in CC mode on another device without TotalMix FX, please ignore this post. ,)
MADIface(s) Pro, UFX+, MADI Router
Mac mini Intel, iPad Air 2020