DeLub
Active Member
My understanding is that Apple stores, depending on the source files they get delivered, multiple versions of the same track. During playback it decides which version to stream to you depending on your settings and device capabilities.
The available versions:
The available versions:
- Compressed AAC file, stereo (a subset of which have been marked 'Apple Digital Master'); these ar the 'traditional' files
- Lossless ALAC file, stereo, 16 or 24 bits, 44.1 or 48kHz
- Hires Lossless ALAC, stereo, 16 or 24 bits, > 48kHz
- Compressed ATMOS file, at least playable through Apple TV on Atmos capable AVR
- Compressed pre-rendered ATMOS file, downmixed to stereo, playable on any device, meant to be listened to on headphones