I use this pedal with the H90 and I’m 100% certain it’s compatible. Make sure the EXP input you’re connected to is configured for an expression pedal. Always connect the cable to expression pedal on the AUX input first, then connect it to the H90 so the pedal can sense the appropriate potentiometer load. Lastly, conduct the calibration procedure. As you sweep back and forth it must go from 0 to 100.
