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Yes you can use hdmi (arc) for sound but I would recommend using a digital audio optical cable
Sorry, there was a problem. Please try again later.Hello Purple1, I have attached a link below to the specifications of this unit, you will find all available Inputs/Outputs here. https://www.samsung.com/us/televisions-home-theater/tvs/uhd-tvs/50--nu7100-smart-4k-uhd-tv-un50nu7100fxza/#specs ^Britt
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