DVD-Video (DVD) Player
No one format in the history of consumer electronics has been more successful than DVD-Video. With over 91 percent U.S. market penetration, DVD-Video players are in nearly everyone's homes and also in computers, in-car systems and far beyond.
DVD-Video players can play many other types of discs, including compact discs. They can play surround sound discs like DTS music discs and can output audio, via a digital cable, in lossy 5.1 formats like DTS and Dolby Digital.
Today, home theater enthusiasts are using Blu-ray players as DVD-Video players, because Blu-ray machines are backwards-compatible with DVD, and more importantly upconvert DVD to HD resolutions.