LINE6 FBV2 FOOTSWITCH 2-BUTTON SCROLL FOOTSWITCH FOR LINE 6 AMPSDon't feel like carrying around a full sized foot controller? Now you don't have to! The FBV2 lets you scroll through the first bank of four presets and is small and light enough to fit in your gig bag. With its ultra reliable switches and aluminum case, the FBV2 can take all the abuse you can throw at it. FBV2: Scrolls through Channels A,B,C, & D Self powered though the locking cable COMPATIBLE PRODUCTS: Spider Valve Spider IV Spider III* Spider II*