Features : Wide gain range boost, enough working along as a best overdrive. Full metal shell. Very small and exquisite. True bypass. Specifications : Input: 1/4" monaural jack (impedance: 1M Ohms). Output: 1/4" monaural jack (impedance: 10k Ohms). Power Requirements: AC adapter 9V DC (center minus plug). Current Draw: 6 mA. Dimensions: 93.5mm (D) × 42mm (W) × 52mm (H). Weight: 160g.