Buying a streamer and cables for $12k still leaves you with a near 20 year old DAC. I’m sure it sounds very good but newer DACs at that level are better.
If you like the sound of PBD, they offer MPD-6 with internal streaming module.
If I were you, I’d keep your player and get a one box dac with streaming card like the MPD-6.
Going with a one box solution gives you an option to add whatever streamer you want later on but accomplishes a DAC upgrade immediately. The DAC is where the ROI will be in your case. Just my opinion of course.
You would be using Roon with the MPD-6.
I own a Meitner MA3i which has an excellent streaming card. Using Roon and JPLAY. Sold Aurender N200 as it brought nothing to the table - no real improvement over the internal streamer.

