A:Answer The LG SUPER UHD 4K HDR Smart LED TV w/ Nano Cell™ Display - 65" Class (64.5" Diag), Model # 65SJ8500 has a built-in DTS-HD decoder, it does not have a Dolby Atmos® decoder, only the OLEDs TVs have both decoders. The Digital Sound Output settings can be configured and are available only when an Audio Out (Optical/HDMI ARC) / Internal TV Speaker + Audio Out (Optical) is selected. If the Sound Input is Dolby Digital, the Digital Sound Output will be Dolby Digital. If it is Dolby Digital Plus, the output will be Dolby Digital Plus. If it is HE-AAC, the output will be Dolby Digital. If it is DTS, the output will be DTS/PCM, if it's DTS EXpress the output will be DTS/PCM. If it's DTS-HD MA, the output will be DTS/PCM...^IFV