“Does this TV have eARC support? Will it be compatible with the ATMOS feature of the new Sonos Arc?”

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• HDMI eARC is an HDMI 2.1 specification and all the HDMI ports on the LG UHD 73 Series 70 inch Class 4K Smart UHD TV with AI ThinQ® (69.5'' Diag), Model # 70UN7370PUC are HDMI 2.0 ports so HDMI 2 only supports HDMI ARC functionality, not HDMI eARC functionality. This model does not support Dolby Atmos...^IFV

  Answered by LG Digital Customer Care 6 years ago

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