Korg EXP-2 Foot Controller Lightweight Compact Volume MIDI Keyboard Pedal (EXP2 EXP 2) Acoustic Guitars select one of the six

select one of the six 'always available' channels on the transmitter and receiver and you're up and running

And with the powerful insert function

Get great sound through any headphones from Solo’s amped-up headphone output with independent volume control

reproducing the sound consistently

Korg EXP-2 Foot Controller Lightweight Compact Volume MIDI Keyboard Pedal (EXP2 EXP 2) Acoustic Guitars select one of the sixKorg EXP 2 Foot Controller Lightweight Compact Volume MIDI Keyboard Pedal (EXP2 EXP 2) A foot controller that can be used as a lightweight and compact volume expression pedal. Use as a volume pedal (when using INPUT 1 and OUTPUT 1) or as an expression pedal (when using OUTPUT 2). Minimum volume can be set in a range from 0 to approximately 50%.