How do I map the X1 Mk2 to control 4 decs?
Have you looked at other mappings that do that?
For inspiration.
Thank you very much, this link helped me a lot! Could you tell me if there's something similar for the Z1 too?
You will be able to remap all except for the touch strip and LED displays. Not recommended to run all four decks effectively. You are better of with second X1.
There is. Just take a look at the website yourself.