This is the NEWEST version of the GA FC Footcontroller. It lets the user switch channels and Effects On/Off AND ... drum roll please ... connect a second GA FC Foot Controller and get functionality out of both pedals in the never ending quest to chase tone but not have to power a pedal board :) Works like a camp with the Boss Katana 100s. TRS 1/4" to 1/4" cable NOT included ... and you'll need one for it to work with the Katana.