[AV Receivers] What function is “eARC”?
Last Update: 24-7-2019
eARC (enhanced Audio Return Channel) supports uncompressed audio formats such as Dolby TrueHD and DTS-HD, and object-based surround such as Dolby Atmos and DTS:X, which are not supported with ARC*, via compatible TV (with the HDMI cable).
You can add this function to certain 2017 and 2018 AV Receiver models by updating the firmware.
*ARC:
ARC (Audio Return Channel) allows audio to be sent from your TV to your AV products (such as AV receiver, Soundbar etc.) through the same HDMI cable that carries the video signal in the other direction, from your AV products to the TV.
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