I want to use my Roku soundbar with ARC so I can control the tv as well, but I do not get the full HDMI if I do it this way correct? I have never felt I got as good as a display as the Sony 4K tv apps I have.
The Hdmi-Arc allows for two way communication between the tv and soundbar, you will never be listening to audio from devices connected to your tv at the same time you're watching and listening to channels from the built-in streamer on the Roku soundbar or streambar. So one won't degrade the other.
Edmund Roku Community Streaming Expert
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