A:Answer Hello JACK,
The Best Buy spec sheet is incorrect. I have this tv and can confirm there is no headphone audio output on the 55" class LG MU7300PUA model. There is no headphone audio out on the LG LED Nano series as well, despite what Best Buy claims on their spec sheet. These models have bluetooth built-in and seem better designed for wireless headsets with bluetooth capability. If you have a non-bluetooth wireless headset, a digital-to-analog audio converter box is required and possibly an optical audio splitter. It may be inconvenient to install and an unwanted added expense. Remarkably, only LG OLED tvs retain the headphone audio output connection. If you're interested in other brands, I found Sony's 55" UHD tv is very similar to LG's specs and has the headphone audio output as a standard feature. Other brands include Toshiba's Fire TV and Sharp's Roku TV. These however, do not have a wide viewing angle like the LG and Sony, if that is important to you. Good luck in your search.