Balanced/unbalanced Smart direct input box with ultra low distortion,it quietly transfers the sound of guitar or directly to the Balanced/unbalanced output,gain switch,cabinet simulator and ground function included Full metal shell. True bypass. Features and Specifications Mini effect pedals pack an incredibly BIG sound into a very small package. Very small and exquisite Full Metal Shell True bypass Input: 1/4 inch monaural (impedance: 1M Ohms) Output: 1/4 inch monaural (impedance: 470 Ohms) Requirements: AC adapter 9V DC (center plug) (Not Supplied) Current Draw: 40 mA Colour:black Material:Aluminum alloy Size:93 x 42 x 52mm Weight:160g Package Contents: 1 x Guitar Effect Pedal 1 x English manual Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.