It's Dolby Digital surround with Apple TV, read this too.... scroll down the pageDoes anyone have CBS All Access. What type of audio do you get? I have a Roku 4, and the audio is only 2.0. At least it does appear to have some ProLogic encoding. Just wondering if it's just the Roku app, my particular model Roku, or if that is the only audio available.
For reference, I have been watching "Star Trek: Discovery", and even tested an episode of "Bob Hearts Abishola".