GA-FC Foot Controller

Foot controller for Boss Katana

If you want to keep your hands on your axe at all times, the GA-FC foot controller lets you drive the GA-212 or GA-112 from the floor. It also allows expansion. Plug in up to two optional Expression pedals* for volume and drive control, and link to additional stacked amps with the Link In/Out port.

http://www.musiciansfriend.com/amplifiers-effects/roland-ga-fc-guitar-combo-foot-controller-for-ga-112-ga-212-amps