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.

• Switch instantly between four channels and two routes of loops, reverbs, boost settings, etc.
• Simultaneously connect two expression pedals* for realtime control of volume and drive
  
  Compatible products: Blues Cube Artist, Blues Cube Artist212, Blues Cube Tour, KATANA-100 MkII, KATANA-100/212 MkII, KATANA-HEAD MkII, KATANA-Artist MkII, Acoustic Singer Pro, Acoustic Singer Live, Nextone Artist, Nextone Stage, Nextone Special, WAZA Tube Amp Expander
  
  *EV-5, FV-500L, and FV-500H are available as optional expression pedals for the GA-FC.