Quality Sound Within Reach Powerful wireless subwoofer Bluetooth V5.1 with Qualcomm® aptX™ Versatile connectivity: Line In, AUX, Optical, Coaxial, Bluetooth Built-in Class-D amplifier and Digital Signal Processing (DSP)Bluetooth version V5.1 Audio codecs SBC, aptX Audio inputs Line In, AUX, Optical, Coaxial, Bluetooth Frequency response R/L: 140Hz-20kHz SW: 50Hz-170Hz Input sensitivity AUX: R/L: 450±50mV SW: 250±20mV Line in: R/L: 550±50mV SW: 250±20mV Optical/Coaχial: R/L: 400±50mFFs SW: 250±20mFFs Bluetooth: R/L: 500±50mFFs SW: 250±20mFFs Poweroutput (RMS) 110W (R/L:20W+20W SW:70W) Signal-noise ratio R/L: 85dB(A); SW: 75dB(A) Noise level 25dB(A)