Ok so I don't want to take the risk.
What about buying a Bluetooth speaker like the samsung HW-J450?
It will work with the apple tv?
That sound bar will work, but you'll only ever be able to attach one input source to it. If you have more than one source or ever plan on adding more sources you'll have no way to do so. If this is acceptable then go for it.
If you go the receiver route here are two cheap sets of speakers that get generally good reviews for their price point.
$52/pair:
https://www.amazon.com/Dayton-Audio-B652-Bookshelf-Speaker/dp/B002RMPHMU
$89/pair:
https://www.amazon.com/gp/aw/d/B00E...ords=micca&dpPl=1&dpID=41-MULbHU8L&ref=plSrch
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