I own a Vermona 1642 with 2 Expansion. The Channels can be replace by it´s own.
I could imagine to take just the layout of the Mixer and replace from time to time the channels with a Midi Controller instead of a mixer channel.
What could i take for this? Livid?Ardunio? Price per channel? I know the Livid stuff and the cheaper Novation Units. Cool, but if want to go on Stereoids?