The Wah-Pad WP performs the same functionality as the True Bypass Wah-Pad TBWP. The only difference is that it can be used only with one of the G LAB Guitar System Controllers GSC. So the Wah-Pad should be placed beneath a wah-wah effect and the Wah-Pad’s connector should be plugged into the GSC’s LINK or WAH-PAD connector. A wah-wah effect input and output should be connected to SEND output and RETURN input of GSC loop. The wah-wah effect power switch should be set to active position and later – blocked at this position by the element being a part supplied with the wah-pad. The GSC controllers enable two Wah-Pad’s modes of working: to switch on at any preset a loop to which a wah-wah effect is connected (''adding to preset a wah-wah'' mode) and to switch on another preset in each bank (''changing preset'' mode enabling to change settings of a whole system).