Love this sound bar the 7.1+ Alto 2.1 Sound is great for us 60+er’s that like good sound without the need to blow out the windows and doors. The sub woofer blue tooth's nicely to the sound bar. The sound bar is wired by HDMI to the tv and has its own 110v power supply. It has an IR cord too which I guess is for your sound bar remote, and an optical cord as well which I haven’t a clue what it’s for so I didn’t install it. I mounted it below the tv so I’ve got 3 wires/ cables showing slightly between tv and sound bar. If you mount it above your tv you can conceal them better. The TCL tv recognizes the sound bar and is easy to make them work together. The remote has music mode, movie mode and news mode which is fabulous! Highly recommend! This unit is a must to really enjoy your big tv! I would buy again!