Super Audio CD

Super Audio CD
Reverse side of a hybrid SACD. Unlike a CD, the reflection has a gold hue.
Media typeOptical disc
EncodingDigital (DSD)
Capacity4.38 GiB / 4.7 GB (Single Layer and Hybrid)
7.92 GiB / 8.5 GB (Dual Layer)
Read mechanism650 nm laser (780 nm for the CD layer of a Hybrid disc)
StandardScarlet Book
Developed bySony & Philips
UsageAudio storage
Extended fromCompact Disc Digital Audio
Released1999; 25 years ago (1999)

Super Audio CD (SACD) is an optical disc format for audio storage introduced in 1999. It was developed jointly by Sony and Philips Electronics and intended to be the successor to the compact disc (CD) format.

The SACD format allows multiple audio channels (i.e. surround sound or multichannel sound). It also provides a higher bit rate and longer playing time than a conventional CD.

An SACD is designed to be played on an SACD player. A hybrid SACD contains a Compact Disc Digital Audio (CDDA) layer and can also be played on a standard CD player.