Hi @stoeckle,
Thank you for posting here at the Roku Community!
We appreciate this inquiry.
Please be advised that our Roku Select TVs are only compatible with our Roku wireless speakers and soundbars; other external audio devices may not work.
For reference, you can check out this link: What devices can I connect to my Roku TV
All the best,
Janadee
Nadee K.
Roku Community Moderator