Power output : L/R (treble): 15W+15W RMS L/R (mid-range bass): 50W + 50W RMS Signal to noise ratio :90dB(A) Noise level:25dB(A) Input sensitivity : Line 1 input/800±50mV Line 2 input: 600±50mV Bluetooth input: 450±50mFFs Optical/Coaxial input: 350±50mFFs Frequency response : 45Hz~40KHz