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 Katana Effects Explained - Wah Wah - YouTube
BOSS Katana - How To Assign Expression Pedals - YouTube
How to use use an expression pedal with your Katana MKII - UNLOCK THAT POWER! - YouTube
NPD Got a new Dunlop Mini Wah to finish my rig : r/guitarpedals
Boss Katana 100 MKII + Pedals and Cables | Bax Music
Boss Katana - Mission Engineering Dual Expression Pedal - YouTube