Power output: L/R (treble): 12W+12W RMS L/R (mid-range and bass): 50W + 50W RMS Signal to noise rati:94dB(A) Noise level 25db Input sensitivity:Balanced input: 700±50mV Auxiliary input: 600±50mV Bluetooth input: 350±50mFFs Optical input: 350±50mFFs Coaxial input: 350±50 mFFs Frequency response:48Hz~20KHz Tweeter unit:Planar diaphragm tweeters Mid-range & bass driver:5.5 inch (148mm) Dimensions:505(L)A~350(W)A~412(H) mm