Q: Which expression pedals can I use with my VL3?
A: We support (generally speaking) pedals that are wired like a Roland pedal and don't support Yamaha style wiring.
There are some converters out there (or you can DIY) to swap the two wires that make a Yammy into a Roland electrically.
Here's the forum thread it came from
So far, we know that the following pedals don't work correctly:
Pedals we know work correctly (with calibration of course):
M-Audio EXP (in M-Audio mode)