Dolby Headphone technology gives you the sound of a 5.1 surround system through any pair of headphones.
It accurately models the surround sound listening experience of a properly set up and calibrated 5.1-channel speaker system, making it ideal for personal and portable surround listening.

This component wraps the functionality of a Dolby Headphone engine DLL (typically DOLBYHPH.DLL bundled with some software DVD players) to be used under foobar2000. After instalation you must configure the plugin pointing out the location of that DLL in your system and restart foobar2000. Amplification is provided by the Dolby Headphone engine itself.