The GA-FC EX provides expanded foot control functionality for select BOSS amplifier models. It maintains the simple setup and intuitive workflow of the standard GA-FC while offering additional functions for greater performance flexibility. The GA-FC EX builds on the standard GA-FC with several enhanced features. Status LEDs with two colors make it easier to see changes when switching. And along with two dedicated expression pedal jacks, there’s an additional control jack with a three-way mode selector. It allows you to connect a third expression pedal or use the GA-FC EX for expanded applications.