Excited to see you here in the Roku Community, slmccool!
You've raised a good question!
Currently, Roku TVs still do not support this setup, as it automatically disables the TV speakers when you connect a headphone jack to your TV.
But here's what we can suggest: you may use the Headphones mode with the Roku Mobile app, which can connect up to four devices at the same time.
To learn more about it, visit this support article: How to use headphones with the Roku mobile app in Headphone Mode.
We hope this clarifies everything. Let us know if you need more help.
Best,
Emman
You can also find wireless headphones where you can plug the transmitter into the TV via RCA jacks or optical. Unlike the phono plug, those rarely mute the TV sound.
