What port does my soundbar plug into?

You will find the HDMI ARC port at the back of your soundbar. You will find HDMI Arc port on most top Dolby Atmos soundbars, as well. It will be labeled on most soundbars, so you wont have a hard time figuring out which one it is.

Do sound bars require HDMI?

If your TV and sound bar both have an HDMI jack marked ARC (for audio return channel), a single HDMI cable (version 1.4 or higher) is all youll need. If your TV doesnt have an HDMI/ARC input, youll need both optical and HDMI connections between the TV and the sound bar.