If it does not work on Galaxy S7, please update it to latest software. (Settings > Software update)

The sound utility available on the galaxy series

Functions:

Provides various convenience functions related to audio

• Allow you to control the media volume instead of ringtone when pressing the volume keys
• Support individual application volume (You can control the volume of music and games differently)
• 150 steps of fine volume and support Floating Equalizer(EQ)
• Create and activate personalize sound settings
• Support mono audio and left/right balance

The following feature is supported on s8 only.

Different output path for each app can be specified. (Music app > Bluetooth, Game app > Speaker)