Sharp AQUOS Operation Manual page 30

<< Sound settings
Unique Sound setting from SHARP
Refer to " (HOME)" > "Settings" > "Device Preferences" > "Sound".
Auto Volume
Different sound sources sometimes do not have the same loudness level,
such as a programme and its commercial breaks. The Auto Volume reduces
this problem by equalising it.
Off / On
Downmix Mode
You can select the multi-channel downmix method that is compatible with
your stereo system.
Stereo / Surround
EN 6-2
>>