User guide

GP4
eng
External
Speaker
Adjusts how the sound is synced from external speakers, such
as an external speaker connected to the digital audio output
port, LG audio device and headphone.
The "-" button makes the sound output faster and the "+"
button slower than the default value.
✎ LG audio device is supported only for models with the
optical digital port.
Bypass
Outputs broadcasting signals or the audio of an external
device without audio delay. Audio may be output before video
as it takes time to process video input into the TV.