If a DVD Player Can Play CDs, Then Which is Better For Playing CDs – A DVD Player or a CD-only Player?
CDs and DVDs, although sharing some basic similarities, such as the size of the discs, and the the fact that they are both digitally encoded formats – they are very different. CDs have different focusing requirements than DVDs, so, in order for a DVD player to play CDs they need one of two things: A laser that has the ability change its focusing accurately based on DVD or CD detection or, more commonly, a DVD player will have two lasers, one for reading DVDs and one for reading CDs. This is often referred to a Twin-Laser Assembly as is usually listed in the spec sheet for DVD players that have them. The reason that DVD players can also play CDs is not so much technical, but is a conscious marketing strategy. When DVD was first introduced to the market in 1996-1997, it was decided that one of the best ways to increase sales of DVD players and make them more appealing to consumers was to also include the ability for DVD players to also be able to play CDs. As a result, the DVD player act
