Surround sound on Xperia Z3 creates the sound of a concert hall, club or studio while listening to music using a headphone. to turn on and enable surround sound on Xperia Z3, do as follows:
1. Open Settings and under the Device settings, touch the Sound option
2. Tap the Audio Settings option, followed by the Sound effects option
3. Now under the Headphone Settings, tap the Surround Sound (VPT) and select your set.