Rongok:
I'm wondering if it is possible to have 2 expression pedals working at the same time to change 2 different parameters.
It's not possible to have 2 expression pedals changing two parameters, because there's only one EXP jack on the H9. But you could have 2 MIDI expression pedals control 2 different parameters. If you look in the MIDI CC assignment section of the Pedal settings of H9 Control (or on the H9 itself), you'll see that you can assign MIDI CC messages to any parameter. These are global settings though. You couldn't have MIDI CC control parameter 1, i.e. Mix, in one preset for example and parameter 6 in another preset.
