The Blackstar IDCOREFS11 (also known as FS-11) 2-Way Footswitch is a dual-switch controller for ID:Core series amplifiers, connected via a 1/4" jack on the back panel of the amp. Control your ID:Core Amps in Alternate Mode or Manual Mode. In Alternative Mode (selected via INSIDER) patches will cycle on a ʻloopʼ. e.g. switching up from Bass 2 will move to Clean Warm. When in Manual Mode, the effect of any footcontroller switch will depend on its last state. Pressing Switch 1 will return the amplifier to Patch Mode. Pressing Switch 2 will toggle the effects off and on without returning to Patch Mode. Specifications: ELECTRONICS: Controls: Alternative mode, Default mode, Switch One, Switch Two DIMENSIONS: Weight: 0.585KG Dimensions (Width x Height x Depth): 131 x 60 x 91 (mm)