Edifier S2000MKIII 2.0 Lifestyle Active Bookshelf Bluetooth Studio Speakers - Total 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 - Connections: Bluetooth, OPT, COX, Line In - S2000MKIII - 12 Months Limited Warranty