Hi Greg (?),
I’d really like to help, but just don’t feel I have quite enough info. So let me try and lay the basics out. See if we can disassemble the question.
A CD transport spins disks with computer files on them. So, it is a reader and a streamer. There is no cashing involved as far as I know. This data goes to a DAC, where it is converted to an analog signal.
Streaming from files located on a hard drive, or network drive, or in a streamers internal drive can be exactly the same files (let’s assume for simplicity). If you use a high quality streamer, it may cashe your files to make sure there are no gapes. The resulting sound quality is roughly equally dependent on the streamer and the DAC (there are some folks that may disagree… but I have a lot of experience on my side that says both).
So, having said this. If I was setting up the best sounding system I could, that was forward looking, I would be getting the best possible streamer and DAC. Your ripped files and CDs are probably all available on Qobuz… so, are of little value.
The Yggdrasil is a good budget DAC… if you matched it with a used Aurrender N100… or better yet N200…. You would have a better source than a transport and access to millions of albums. Then when you upgraded your DAC the sound quality would make a huge jump.
I hope this made sense.