You can connect an audio device that supports Optical to the optical digital audio output
port to enjoy your TV’s sound in richer quality and greater convenience.
Only available for models with an optical digital port.
For some devices, you can adjust the volume using the TV remote control.
You can set Digital Sound Out (Auto / Pass Through / PCM) and LG Sound Sync (On /
Off).
HDMI ARC
Sound from the TV can be output through an external audio device connected via a
HDMI (ARC) port.
Select HDMI ARC to automatically turn on SIMPLINK. Once SIMPLINK is turned off, the
output speaker settings automatically revert to the default settings for uninterrupted audio
output.
You can set Digital Sound Out (Auto / Pass Through / PCM) and eARC (On / Off).
Digital Sound Out
You can configure the Digital Sound Out settings.
These settings are available only when an Optical / HDMI ARC is selected.
When Pass Through is enabled, sound effects may not be output.
The codec output with a device may differ from input signals.
Sound Input Digital Sound Output
PCM All PCM
Auto / Pass Through MPEG PCM
Dolby Digital Dolby Digital
Dolby Digital Plus /
Atmos
(Optical) Dolby Digital
(HDMI ARC) Dolby Digital Plus /
Atmos