Check the following:
- Make sure that a dedicated driver for Hi-Res playback is installed on the Macintosh® computer.
- Make sure that the latest version of the Hi-Res Audio Player for Mac (version 1.1.0 or higher) is installed. Downloads are posted on your model support page.
NOTE: Only DSD files in DSD Native format can be played. Playing back DSD files over PCM format is not supported.