Level, Tone, Drive, and Color controls  Input Impedance: 1 Mohms Output Impedance: 10 Kohms or greater Equivalent Input Noise Level: -100dBu or less (IHF-A, Typ.) Connectors: Input Jack, Output Jack, AC Adapter Jack (DC 9V) Power Supply: 9V DC, either a Dry Battery 9V type or an AC Adapter Current Draw: 12 mA (DC 9V) Accessories: Dry Battery 9V type Optional AC Adapter: Roland PSA-120S 2-7/8" W x 5-1/8" D x 2-3/8" H Weight: 15 oz.