Total power output:24Wx2 + 36Wx2 (DRC On) Signal to noise ratio:?85dB Distortion:?0.5% Chanel Separation:?45dB Input sensitivity:LINE 1: 900±50 mVLINE 2: 700±50 mV Optical:950±50 mFFs Audio input:RCA, Optical, Bluetooth Speaker unit:Tweeter: 19mm silk dome tweeter, Bass: 4 inch (116mm) Dimension:Active speaker: 174x289x252 (mm) Passive speaker : 174x289x238 (mm) Weight:Net 10.5Kg