Input:2*1/4"mono jack (Impedance value: 4.7M ohms)Output:2*1/4"mono jack (Impedance value: 100 ohms)Power Supply:DC. 9V 300mA Center negativeDimensions:69.82x121.5x50.65mmWeight:0.298KGAccessories:Safety Instruction & Warranty Card,Sticker,quick guide