“Which connection gives the best sound...HDMI ARC or Optical? Which connection gives best overall functionality... HDMI ARC or Optical?”

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• Digital Audio Out, optical will offer the best sound quality. ^Daphane

  Answered by LG Digital Customer Care 4 years ago

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• I found either one works, but the better sound is HDMI Arc

  Answered by Massexodus 4 years ago

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• If you have the HDMI ARC (audio return channel) and want to install a second device like an Xbox to the sound bar, it allows the Xbox to pass through the sound bar to the TV while simultaneously allowing sound from the TV back to the sound bar. This enables 2-way communication between the TV and sound bar without an extra cable for audio (like an optical cable). For simple TV setup an optical cable will work but you must take care to insert and seat the connection properly (alignment is important). Sound quality should be unaffected either way.

  Answered by HDDog 4 years ago

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