ROWIN LEF-331 DI BOX Direct Input Box Balanced/unbalanced Smart direct input box with ultra low distortion,it quietly transfers the sound of guitar or bass directly to the audio system Balanced/unbalanced output,gain switch,cabinet simulator and ground lift function included Full metal shell. True bypass. Features and Specifications ROWIN micro effect pedals pack an incredibly BIG sound into a very small package.Very small and exquisiteFull Metal ShellTrue bypass SpecificationsInput: 1/4 monaural jack (impedance: 1M Ohms)Output: 1/4 monaural jack (impedance: 470 Ohms)Power Requirements: AC adapter 9V DC (centre Negative ) (not included) D1 box has a gain control & cabinet simulator switch, to turn on/off the 4*12 cabinet simulator function. Gives you a multi functional direct input box,Carries the signal to your audio device without loss Grounding switch:To turn on/off the grounding function.Gain Switch: Gain Option(-20DB,0DB,+20DB) Whole aluminum-alloy chassis Note: Power supply not included. Please use a 9V DC power adapter whose polarity is negative centre otherwise, the product may not work properly. Package List: 1 * Effect Pedal 1 * User Manual(English & Chinese) 1 * Year warranty through our store No Duty to Canada and USA FAST 'N FREE USA ShippingShips from Canada