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The HDMI ARC (Audio Return Channel) on the LG - 60" Class (59.5" Diag.) - LED - 2160p - Smart - 4K Ultra HD TV - Gray, Model # 60UH6150 allows you to connect the HDMI ARC port to the HDMI ARC port of any other device that supports the HDMI ARC function so that you can control power, volume, and other features from your TV remote. In most cases, it will automatically transfer your TV's audio to the device it is connected to through the HMDI ARC ports without having to deactivate the TV's speakers.If you use your TV as the hub of your entertainment system where you have gaming consoles, Blu-ray player, set-top boxes and other devices all connected to the TV, the sound gets passed to all those units as long as they also have an HDMI ARC port. The most important aspect of the HDMI ARC port is that sends both upstream and downstream signals over a single HDMI ARC port and cable. In other words, you can send signals from the TV to the device or from the device to the TV and you only need the TV remote to control the devices...^IFV
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