Old Blood Noise Endeavors Expression Ramper; Effects Pedal for Electric Guitar & Bass; The Expression Ramper allows you to pick two expression settings and move between them, either in one motion or as a continuous LFO activated by a single footswitch; hook it up to your expression-enabled effects pedal, pick your first expression setting in the A position, then your second in the B position, from here, you can set Expression Ramper to move between A and B in three different ways; In TRI mode, it glides in a linear Triangle wave sweep from A to B, while in SQR mode it will make instant jumps, A<>B mode triggers a one-shot sweep, where every press of the footswitch jumps from one position to the other; The speed of the LFO and One-Shot movement is set via the Rate knob; Controls: Rate/Parameter; Switches: Shape, Parameter; LED: Effect On/Preset; Footswitches: Effect On; Connections: Output (1/4"" TRS Jack); Power Supply connector: Barrel Connector 5.5 x 2.1 mm, center negative; Current Draw: 10 mA; powered by a 9 V DC Power Supply (not included); suitable optional Power Supply: Item no. #409939; Dimensions (W x D x H): 57 x 127 x 57 mm (2,24"" x 5"" x 2,24""); Weight: 140 g (0,31 lbs); Made in USA; Note: Battery operation is not supported