I have a dunlop mini x connected to the exp input on the player. When i have a rig with a wah, everything works as it should.
However: when I switch to a rig that has a volume pedal everything works great within that rig. The following issue occurs after using the expression pedal as a volume and switching back to a rig with a wah slot: gain is gone. All profiles now sound like the gain has been turned down 80%.
Sometimes, when I unplug the cable in the expression input, the sound is gone completely. Reinserting the exp cable brings back the crippled gain sound.
Only solution is to power cycle the Player.
I used my Moog EP-3 from my power rack, and same issue.