Power rated: 20W+8Wx2, Speaker:4"+2.75"x2 ,impedence of loud speaker:4 Ohm, Input port: Stereo 3.5mm Line in , S/N:>60dB, Seperation:>40dB THD:<0.10% at 1W, Product Dimensions : Subwoofer 140(W) x 240(H) x285(D) mm Satellites:95(W)x 113(H) x 155(D)MM, Power Input: AC 220V 50Hz N.W: 6 KG , G.W.: 6.5KG BOX size : 349x191x382mm