Custom Footswitch prototype for Katana MK II : r/BossKatana
BOSS Katana 50 MKII Guitar Modelling Combo
GA-FC : Footswitch Boss - SonoVente.com - en
Boss katana 50 footswitch question | Fender Stratocaster Guitar Forum
Boss KATANA-50 Mk II Owner's Manual | Manualzz
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
BOSS Amplifier Foot Controller (GA-FC), Black : Amazon.ca: Musical Instruments, Stage & Studio