Format
MP3
Universal format with basic sound quality
ALAC
CD-Quality Lossless playable in iTunes, iOS, Android, desktop
FLAC
CD-Quality Lossless playable on Android, desktop
CD
Standard Compact Disc
FLAC-HD
Hi-Res 24 Bit Lossless playable on Android, desktop
ALAC-HD
Hi-Res 24 Bit Lossless playable in iTunes, iOS, Android, desktop
MQA
Hi-Res 24 Bit playable on iOS, Android, desktop
DSD
Highest resolution playback, requires DSD-capable DAC
Fidelity