Sony SVD13236PXW - Manual (Page 107)

Personal Computer
VAIO Duo 13
SVD1323
Speakers
Adjusting the Speakers Volume
You can change the volume level of the speakers and headphones.
Playing Optimized Sound for Your VAIO Computer Using ClearAudio+
ClearAudio+ enables high quality sound that is optimized for your VAIO computer using digital signal processing technologies
originally developed by Sony.
You might be looking for the following topics:
Connecting External Speakers/Headphones/Headset
Notes on use
Copyright 2013 Sony Corporation
User Guide
How to Use
107