Eno Ex Micro Dm-3 Metal Distortion Guitar Effect Pedal Worldwide Effects Modes: 3 (Lo Boost, Boost Off, Hi Boost) Input: 1/4 monaural jack (impedance: 1M Ohms). Output: 1/4 monaural jack (impedance: 470k Ohms) Power Requirements: AC adapter 9V DC (center minus plug). Current Draw: 20 mA Dimensions: 95mm (D)  45mm (W)  55mm (H). Weight: 160g. Accessories: Owner's Manual 3 Working Modes: Lo Boost/Boost Off/Hi Boost. Full metal shell. Very small and exquisite. True bypass. DC 9V Adapter power supply