Spark Control X comes with 6 steel footswitches instead of Spark Control’s 4 footswitches.
Also, Spark Control X works as a standalone foot controller for the Spark 2 / Spark EDGE / Spark LIVE amplifier and adds multi-color LEDs for on/off status indication and 2 expression pedal inputs.
Finally, Spark Control X comes with 3 transparent overlays that can be used to label functions assigned to the footswitches and can be swapped easily.