This Pedal is currently available.
Floor Control for Roland and BOSS Amps
If you want to keep your hands on your axe at all times, the GA-FC Foot Controller lets you drive Roland and BOSS amps from the floor. It allows for expansion as well: plug in optional expression pedals etc.
Boss GA-FC EX Foot Controller
Boss GA-FC
Boss GA-FC EX Foot Controller
Boss GA-FC EX Foot Controller
Boss GA-FC EX Foot Controller
Boss GA-FC Footswitch Controller