Downloading DSDPlayer 1.0.11 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The software is categorized as Audio & Video Tools. We recommend checking the downloaded files with any free antivirus. This free Mac app was originally created by C-Media Inc.
From the developer:
DSDPlayer is a DSD audio file player which works with USB audio DAC equipped with Cmedia USB audio codec IC. The list of supported models are: Pioneer U-05, Pioneer A-70, Pioneer N-50, Pioneer N-50A, and Pioneer N-70A. The USB audio DAC driver need to be installed on your MAC system.
You may want to check out more Mac applications, such as Amarra Mini, HyperStudio 5 Legacy Player or Playwatch, which might be similar to DSDPlayer.