EBS UniChorus Studio Edition Rev 2; Effects Pedal for Electric Bass; Analogue Bass Chorus; adds Depth and Dimension to the Bass Sound while preserving the low range; improved headroom and noise reduction, over 40% lighter; Controls: Depth, Rate; Switches: Type: Hall/R.M./Other, A/B/C, Signal routing Serial/Parallel (internal switch); LED: Effect On; Footswitches: Effect Bypass; Connections: Input (1/4" Jack), Output (1/4" Jack); Power Supply connector: Barrel Connector 5.5 x 2.1 mm, center negative; Current Draw: 35 mA; powered by a 9 V Battery or a 9-18 V DC Power Supply (not included); suitable optional Power Supply: Item no. #409939; True Bypass; Dimensions: (W x D x H): 70 x 115 x 35 mm (2,76" x 4,53" x 1,38"); Weight: 235 g (0,52 lbs)