Looking at the Resound streamer, it looks like it will connect to most TVs, but it depends on whether or not you need the TV's speakers on at the same time. I would say a "Roku TV" isn't any different to any other TV in this regard. I think you'll have to look through some user manuals and some aren't very good. For example, the new Roku TV actually made by Roku states, "Only on select models, you can connect headphones or an analog soundbar (not provided) to the TV’s headphone jack." So it would appear some have a headphone jack and some don't. It goes on to say, "Inserting a plug in the headphone jack disables the sound from the TV’s built-in speakers." That would be the problem with using the headphone jack on most TVs.
The better option would be to connect the Resound streamer to the TV using an optical connection. As far as I can tell all of the TVs made by Roku have an optical output. Whether or not the speakers remain active when using the optical output I couldn't say. I have a TCL Roku TV that allows both the TV speakers and optical output to be active at the same time. That's probably true of most TVs.
So the short answer is to make sure the TV has an optical audio output and you should be good to go with anything connected to the TV or the built-in apps.
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