KMA Machines Stereo AB/Y Switch; Effects Pedal for Electric Guitar & Bass; switch or combine your mono input signal using two separate outputs, or switch or combine two separate input signals into one output; Active silent relay-based soft switching, heavily reduces mechanical noise and pops; Durable compact enclosure for years of reliable switching; Controls: ; Push Buttons: ; LED: A, B, Y; Display: ; Footswitches: A / B, A & B ; Connections: A L&R, B L&R & Y L&R (6 x 1/4" Jack); Power Supply connector: Barrel Connector 5.5 x 2.1 mm, center negative; Current Draw: 40 mA; powered by a 9 V DC Power Supply (not included); suitable optional Power Supply: Item no. #409939; True Bypass; Dimensions (W x D x H): 112 x 65 x 56 mm (4.41" x 2.56" x 2.2"); Weight: 260 g (0,57 lbs); Handmade in Germany; Note: Battery operation is not supported