Get The Most Out of BOSS Katana Amps | Electric Violin Shop
Boss Katana Setup Guide | Sweetwater
Katana - Using the Roland GA-FC Controller
Boss GA-FC – Thomann España
Boss Katana Setup Guide | Sweetwater
The GA-FC: Unlocking Performance Potential with Your Amp
BOSS - KATANA-50 MkII | Guitar Amplifier
BOSS - GA-FC EX | Controlador de pedal
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