To accommodate Expression and Footswitch Control Pedals with a different polarity than the ES-8's on-board CTL/EXP jacks, follow these steps:
SETUP:
1. Press the EDIT button.
2. Press the Left/Right Arrow buttons until you
get to the OTHERS Menu category.
3. Press ENTER.
4. Press the Left/Right Arrow buttons until you
get to the Polarity (Pol) Configuration page for
C1 thru C4.
5. Press ENTER.
6. Press the Left/Right Arrow buttons until you
get to the Control Out port you wish to
configure.
7. Press + to Invert the Control Port's Polarity.
8. Press WRITE three times to save changes.