No, you cannot connect to that jack.
The CTL1,2 jacks on the side of this unit are used for connecting a footswitch, and they control different MIDI CC numbers than the pedal or the EXP SW.
No, you cannot connect to that jack.
The CTL1,2 jacks on the side of this unit are used for connecting a footswitch, and they control different MIDI CC numbers than the pedal or the EXP SW.