Affordable Boss Katana Footswitch: Ultra Hack! - YouTube
Differences between the Katana footswitches?
Boss Katana-50 MkII Guitar Combo Amplifier - Musicians Cart
Custom Footswitch prototype for Katana MK II : r/BossKatana
The GA-FC: Unlocking Performance Potential with Your Amp
Owner's Manual
Boss Katana Setup Guide | Sweetwater
Boss Katana Channel Switcher - YouTube
Xsonic Airstep BW Edition – Thomann Elláda
BOSS - KATANA-Artist MkII | Guitar Amplifier
Boss GA-FC – Thomann UK
Owner's Manual
Boss Katana Artist MK-II with Cover and GA-FC Foot Controller at Gear4music
Amazon.com: XSONIC Airstep Kat Edition KATANA MkII & I Footswitch with 5 Footswitches, 2 Control Modes(Change Presets, Toggle Effects), 300H Playtime, Modify Amp sound with BTS App for iOS and Android, Wirelessly :
Get The Most Out of BOSS Katana Amps | Electric Violin Shop