GE-7: Graphic Equalizer Nominal Input Level -20 dBu Input Impedance1 M ohms Nominal Output Level -20 dBu Output Impedance 1 k ohms Residual Noise Level 1 k ohms Residual Noise Level -100 dBu (IHF-A Weighted, Typ.) Variable Range Equalizer Control: +/- 15 dB, Level Control: +/- 15 dB Connectors INPUT Jack, OUTPUT Jack, AC Adaptor Jack (DC 9 V)Power SupplyDC 9 V: Dry Battery 9 V type (6F22/9 V), AC Adaptor Current Draw 10 mA (DC 9 V) Accessories Dry Battery 9 V type (6F22/9 V) Option AC Adaptor (PSA-Series) Size and Weight ( incl. battery ) Width 73 mm 2-7/8 inches Depth 129 mm 5-1/8 inches Height 59 mm 2-3/8 inches Weight 0.5 kg1 lbs. * 0 dBu = 0.775 Vrms *The specifications are subject to change without notice.