Total output =1800w power output - front 450w x 2 power output - sub woofer 900w function selector (cd/dvd , tuner ,aux1 ,aux2 , usb2, usb1 , portable in , bluetooth ) power requirement - narrow (50/60hz) 110 or 220/230v 50/60hz power requirement - wide 110/220v power consumption 170w power off consumption 0.5w power consumption at stand by 0.5w audio control 2ch stereo (by-pass) yes dolby audio yes dts digital surround yes tuner type pll tuner band fm tuner range 87.5 ~ 108.0mhz sound sync - bluetooth (lg tv) yes sound sync - optical yes automatic power on/off - bluetooth (lg tv) yes karaoke echo mode yes echo mode yes voice canceller yes connectivity usb 2 aux 2 bluetooth yes light show and x shiny speaker 2 years warranty payment on delivery