Nord User Forum

The Nord C2 manual in the chapter 7 "MIDI functions" has all the info you need C2 side, read it all and particulary paragraph "Nord C2 with a sequencer" (Mainstage is not different from a DAW/sequencer in terms of management of external MIDI devices, so all you can read there applies to it too) and since C2 supports USB MIDI you just need to connect it to the Mac via USB (EDIT: correction, USB on C2 is only for OS updates, you need a MIDI interface, i.e. a USB MIDI cable or MIDI ports on a sound card).

Then if you need info on how to set up patches in Mainstage to work on 2 distinct MIDI channels coming from the same device, that is more a topic for a Mainstage specific forum (and may depend also on teh plugin) anyway the basic info can be found on Mainstage online manual, here Connect Multichannel MIDI devices to MainStage.

vojtech-h wrote:

maxpiano wrote:since C2 supports USB MIDI you just need to connect it to the Mac via USB.

I think that a MIDI to USB converter is nescessary.

Yes you are right, I remembered it had USB MIDI but it doesn't, so for connecting the C2 to a computer you need a MIDI interface (USB MIDI cable or MIDI ports on an audio card).
Thanks for the correction.