Input:1/4” mono audio jack.(Impedance: 1 meg Ohms) Output:1/4” mono audio jack(Impedance: 100 Ohms) Power requirements: AC adapter 9V DC , center negative.(Highly recommend to use Mooer Micro Power.) Current Draw:300mA Dimensions:93.5mm(D) x 42mm(W) x 52mm(H) Weight:160g