See chapter class compliant mode, 1st chapter:
"[...]For example there will be no hardware settings, no (Total) Mix and no settings for the effects.
On the iPad (iOS) the UFX can be fully controlled by the optional app TotalMix FX for iPad.[...]"
"[...]Neither Windows nor Mac Class Compliant support is relevant, though, since there are dedicated and matured drivers for both OS X and Windows, which provide ALL the device's features at lowest latencies. The main reason for implementing Class Compliant mode was to allow connecting the UFX to an Apple iPad®![...]"
By the way: The CC mode is also interesting for Linux.
There is also a CC mode for the Octamic XTC. I tried it once. If I recall correctly, on Windows you see the WDM devices for the channels of the recording interface that are supported in CC mode and that's it. You can access those channels with Windows apps, but no driver settings and for recording interfaces: no TotalMix FX and no settings for FX."
Of course, you would have to clock synchronize both recording interfaces.
More useful information you can find here in the archive
https://archiv.rme-audio.de/en/support/ … c_mode.php
There is one thing where I am not 100% sure, whether CC-mode is only working via USB.
When CC mode has been primarily made for connecting the iPAD, then I would guess that it is limited to USB.
Maybe RME can detail this, many thanks.
BR Ramses - UFX III, 12Mic, XTC, ADI-2 Pro FS R BE, RayDAT, X10SRi-F, E5-1680v4, Win10Pro22H2, Cub13