The SA-CD format is intended to provide higher-fidelity audio in more channels than those available on regular CDs, according to SA-CD.net. While CD Audio is played at 44.1 kilohertz in two channels of sound, SA-CD audio is played at 2.8 megahertz and supports 5.1 channel audio.SA-CD audio is too big to fit on a regular CD so it uses a different data format to hold the data. Consequently, a regular CD-Rom Drive can't read the data on a SA-CD disc. Additionally, computer DVD-Rom and Blu-ray disc drives are not built to read the SA-CD format, according to SA-CD.net.
While a CD-Rom drive can't play the higher-definition audio on a SA-CD, most SA-CD discs feature a second layer that any CD-Rom drive can read. The second layer is identical to what you would find on a regular CD copy of the recording, which makes the discs backwards compatible with existing drives. The majority of SA-CDs are hybrid versions so even if you buy a SA-CD but don't have a SA-CD player you still can play the disc on a regular CD player. A Hybrid SA-CD that's played on a CD-Rom drive will not sound any better or worse than a regular CD. However, some DVD-Rom drives and DVD players have difficulties reading the regular CD Audio on a SA-CD because they mistake the SA-CD layer for DVD-Rom data because the two formats are similar in size, according to SA-CD.net. SA-CD and DVD use different data formats.
Unlike CD-Rom drives, some Blu-ray players and DVD players are also able to play the SA-CD format. Compatible players should have the SA-CD logo, which looks like the letters SA and CD are respectively forming a circle and has the words "Super Audio CD" written across the bottom. Several Blu-ray players can read SA-CDs, including the first two generations of the PlayStation 3 video game console. Additionally, several hybrid SA-CD players are designed also to play DVDs. Players designed primarily as DVD players will most likely not be able to play the higher-fidelity audio on the SA-CD.