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Guitar Pedal X - GPX Blog - Boss's new GA-FC-EX Foot Controller Massively Expands on the Control Capabilities for Katana Amps
Boss GA-FC – Thomann United States
Amazon.com: Boss Katana-50 MkII EX 1 x 12-inch 50-watt Combo Amp : Everything Else
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 :