From Dust Steven Nichols

HighRes-Studio Master files are lossless at various sample rates from 44.1 kHz up to 384 kHz or 1-bit (2.8224 MHz) for DSD.

Studio Master: FLAC (Free Lossless Audio Codec)

• Widely compatible with Network Streaming players and D/A Converter's (DAC).
• Supported by Windows with software player from Media Monkey, JRiver, JPLAY).
• Supported by Apple OS with software player from Amarra, Audirvana, PureMusic, Songbird.

Studio Master: ALAC (Apple Lossless Audio Coding)

• For users, using Apple/iTunes and a few Network Streaming players
• Supported by Apple OS with software player from Amarra, Audirvana, PureMusic).
• Note: ALAC only supports up to 96 kHz!

Studio Master: DSD (Direct-Stream Digital)

• High-End Network-Streaming players and few D/A Converter's (DAC).
• Supported by Windows with software player from JRiver, KORG MediaGate.
• Supported by Apple OS with software player from Audirvana, PureMusic, JRiver.

Studio Master: MQA (Master Quality Authenticated)

• An MQA file is backward compatible so will play on any device. If you play MQA on a certified product, with an MQA decoder, the file will playback the original studio-master file.
• MQA (Green light) indicates the sound is identical to that of the original source material.
• MQA Studio (Blue light) indicates the sound is identical to that of the original source material and has either been approved in the studio by the artist/producer or has been verified by the copyright owner.