From the developer:
""VSP-11 combines Spatializer's four leading audio enhancement technologies to provide a home theatre experience when watching DVD's or playing CDs or streaming audio.VSP-11 provides astonishing system wide virtual audio processing on the Windows 95, 98, ME, 2000 and XP platforms regardless of the music player used for playback. VSP-11 intercepts the audio signal played through the Wave and DirectSound APIs, processes it and sends it on to your sound card. VSP-11 can also process audio played through USB speakers and other sound devices connected to a USB port. VSP-11 has a very simple and fun user interface that anyone can use. It has the look of an updated, but retro style Juke Box with three dials, each one going to eleven. Buy VSP-11 and enjoy the benefits provided by a leading supplier of virtual audio software to the consumer electronics industry.
""Features: Spatializer 3D-Stereo - creates an astonishing and enveloping sound field from any pair of loudspeakers. Spatializer Natural Headphone - provides a virtual surround sound effect from stereo source material played through headphones. Spatializer Vi.B.E. (Virtual Bass Enhancement) - Dramatically improves the perceived bass performance from inexpensive speakers and headphones. Spatializer PCE (Phase Corrected Equalization) - High frequencies are clearer, crisp and more brilliant while low frequencies are more dramatic, tighter and have more impact.""