![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 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](https://i.redd.it/ezm95jngvpj41.jpg)
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
![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 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](https://external-preview.redd.it/--Gqmw0fwlJ80yJv-7nCKGTz2O7DR9UWlZITKw-gOAw.jpg?auto=webp&s=71b674b64cfc2fdd2705fc4ceba51901ab0eb7b0)
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
![Amazon.com: Boss GA-FC-EX Foot Controller Bundle with Roland EV-5 Expression Pedal and Austin Bazaar Polishing Cloth : Musical Instruments Amazon.com: Boss GA-FC-EX Foot Controller Bundle with Roland EV-5 Expression Pedal and Austin Bazaar Polishing Cloth : Musical Instruments](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/412SDpK+eFL.jpg)