ATRAC3 compresses audio data to half that achieved by the ATRAC technology originally developed by Sony for MD, while maintaining the same superior sound quality. To put in another way, it can compress data to about 1/10th that of CD data. The ATRAC3 technology is used not only in MDLP long-time recording and playback modes but also for Memory Stick, making it possible to record music data equal to one CD album on one 64MB MagicGate Compatible Memory Stick media.