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Dolby Atmos for sure requires ARC, but I’m not sure about DTSX
Sorry, there was a problem. Please try again later.Hi, this model has HDMI Audio Return Channel (eARC) and HDMI Audio Return Channel (ARC). Here's the manual for connectivity https://www.lg.com/us/support/product/lg-S90QY.DUSALLK. ^Vanessa
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