Blu Spec CD: An audioCD, which from the basic idea of Blu-Ray resembles. Because the Blu-Spec CD also uses a blue laser instead of a red one Laser used, which has a lower wavelength and thus enables more precise structures when pressing the pits into the CD. However, a Blu-Ray player is not necessary to play these audio CDs, since the CDs are compatible with the Red Book standard and can therefore be played on any CD or DVD disc DVD-Player can be played.
