5.1ch true surround sound all in one speaker, built in separate 6 channel amplifier, real 5.1ch surround sound, support PCM5.1 decoder, LED display, touch control panel, with bluetooth/USB/AUX/5.1CH/Optical/coaxial/HDx2 input, HDx1 output, ARC function, SW out for active subwoofer, with MIC input for Karaoke, full function remote control, RMS power:150W