DESC: Advanced D.sound technology is comprised of four components that work together to elevate your audio experience to the next level. A Digital Amplifier helps reduce distortion and also helps you achieve crystal-clear sound—even at higher volume levels. The S-XBS and Digital Audio Gain Control help to improve bass response at higher volume levels and MP3 Re-Master technology allows the listener to receive outstanding sound quality from compressed music files, such as MP3 and WMA.