+1
@nekoaudio So is there any advantage to a network streamer?
This question is where the discussion (streamer) begins.
One way to 'Stream' would be to use the NAS as the Server.
Your current Flow / NAS > Ethernet (WiFi) > Roon Core > Sigma Streamer > DAC > Input ...
The Sigma Streamer appears to be Roon Ready so the Mac Core is redundant in the flow.
Typically an App (Roon for iOS / Android) is used to control the playback.
By the time you have a file input to the DAC the media source (your files from the NAS) or a Streaming Service is not the focus of how the gear matters.
Local files or Service (HD Audio) files are more or less equivalent for Streaming.
Only a handful of DACs / Streamer DACs offer the capacity to run an Ethernet connection from DAC to PreAmp input-not to mention the Pre.
The Pass Pre does not appear to have an USB input ... ???