Audio Output Settings
Primary Output Port
The audio format that is output from the PS4™ system is optimized for the connected device. It is usually not necessary to adjust these settings.
If you connect a device such as an AV amplifier for a home theater to the PS4™ system's DIGITAL OUT (OPTICAL) port, you can select the input format that the connected device supports. To adjust settings, select [Sound and Screen] > [Audio Output Settings] > [Primary Output Port] > [DIGITAL OUT (OPTICAL)].
Note that if the selected output format from the PS4™ system is not supported by the connected device, the speakers might be damaged.
Audio Format (Priority)
You can set the format of audio output from the PS4™ system. Select [Sound and Screen] > [Audio Output Settings] > [Audio Format (Priority)]. The default setting is [Linear PCM].