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Both I think Dolby for sure
Sorry, there was a problem. Please try again later.This TCL TV has a coaxial located on the back of the TV near the other inputs. By connecting an antenna you can receive over-the-air channels. However, the reception depends on the signal strength. You can visit www.tcl.com/us/en/products/home-theater/q7-class/65-class-4k-qled-hdr-google-tv-65q750g to see all of the published information about this TV. Hope this helps! Thank you, TCL Customer Support
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