Settings
Wizard 10

Dolby® Headphone Technology allows you to experience realistic 5.1 channel
surround sound using regular stereo headphones.  Dolby® Headphone can be
automatically enabled when you connect headphonesto the front panel of your
PC.  There are 3 room sizes available Reference (DH1), Livelier (DH2), Larger (DH3).

Choose the Dolby® Headphone setting
Enable Dolby® Headphone when I use headphones
 Room Size
Do not enable Dolby® Headphone automatically