Why does the US2400’s faders follow each other (for example, faders #1, #9 and #17 operate together)?
The fader banks on the US2400 are seen as independent Mackie Control surfaces, each with its own port. What you need to do is set up 3 Mackie Control surfaces on 3 distinct MIDI ports (1, 2, and 3). Mackie Control XT or any other protocol will NOT work.
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