Yes. On the SPD-SX PRO, you can assign a wave to a footswitch (FS-5U, FS-6, FS-7; sold separately) connected to the FOOT SW jack.
Note:
- Note that the FS-5L cannot be used.
- You can use a single stereo cable when connecting the FS-6 or FS-7.
Refer to "Playing While Using the External Pads or Footswitch (TRIGGER IN/FOOT SW)" and configure the wave you want to play in PAD EDIT.