Haven't seen a lot of examples of boards that implement the GA-FC, so here's the one I just put together! (Also posted in r/guitarpedals) : r/BossKatana
NEW BOSS GA-FC EX Foot Controller Enhanced control for the BOSS Katana MkII: - Switch channels & effects easily with new dual-color LEDs - Additional... | By BOSS | Facebook
So I just received my GA-FC and this EV-5 expression pedal for my Mk2 100w and I can't get the expression pedal to change from a master volume to a wah. I
BOSS GA-FC EX Foot Controller | Unleash Your Katana MkII | BOSS - YouTube
Amazon.com: Roland GA-FC - Controlador de pie para GA-112 y GA-212 : Instrumentos Musicales