A:Answer Hi SPB2020, Thank you for your inquiry! Unfortunately, the 55" X750H TV does not support A2DP Bluetooth profile connection which allows connection to Headphones and Speakers. You may want to consider our X900H and X950H TV models as these will allow connection for Bluetooth to speakers and soundbars. To output sound from both the headphones and a Soundbar: Connect your headphones to the TV headphone jack and your Soundbar to the DIGITAL AUDIO OUT port and to output sound from both the TV speakers and an audio device: Connect your audio device to the DIGITAL AUDIO OUT port.
You may also refer to this article link: https://www.sony.com/electronics/support/televisions-projectors/articles/00201347?category=televisions-projectors
I hope this helps.
Regards,
Carl