Current Draw:10mA (9V DC) Input Impedance:490kOhms Output Impedance:490kOhms Power Requirement:9V DC, 2.1mm plug, negative center and positive sleeve (not included) Controls:ON/OFF Switch, RATE Control, DEPTH Control, LEVEL Control Connectors:INPUT Jack, OUTPUT Jack, 9V DC Jack Dimensions (DxWxH):95 x 45 x 48mm (3.74 x 1.77 x 1.89') Weight:240g (8.47 oz)