LG has announced that the soundbars designed to go with its 2020 OLED and NanoCell TVs will be available in the US soon. These products are rated to deliver between 380 and 770 watts (W) of audio power, and feature enhancements such as Dolby Atmos, DTS-X and Meridian tuning.
https://www.notebookcheck.net/LG-launches-its-2020-soundbars-for-the-US-market.463786.0.html
The photo depicts a full sound system...with a sound bar included. I was wondering how these skinny "bars" alone output so much power.