I ripped all my original CD’s years ago and stored them as FLAC files on a local NAS drive, with backup!
You did this using "some other cd transport" from it’s digital output to your HD??
Sorry to me there is no way the streamer playing back the HD could be better through the same dac, than just the CD2 as a transport through the same dac.
If anything it should be slightly worse from the HD/streamer.
(unless there’s some wrong with the Lyngdorf CD2 as a transport it’s digital output)
CD > CD/transport? > copied to H/D> Streamer> Dac > system
CD > CD2> Dac> system
You posted this last year.
The CD2 playing the original CD is superior by some way to any of the streaming options. I now use streaming to explore my music collection, playing background music and finding new music on Quobuz. I then buy the CD and play that for a serious deep listen. That is the way to go.