31 surround system soundbar sound bar speaker system 31 components subwoofer transmission mode wireless wireless transmission bluetooth wi fi analogue input 35mm jack input line in digital inputs hdmi input digital input optical usb digital outputs hdmi output audio functions subwoofer external multiroom equalizer sound systems dolby digital dolby digital 51 dts supported audio formats aac alac flac mp3 ogg wav wma dsp programmes 5 digita