If you want transparent:
- Benchmark DAC3 L
- Chord Qutest
The Yggdrasil with the latest analog output board is around your range and has AES/EBU, USB, BNC and coax S/PDIF. I've got it paired with a transport that is probably close to what you're using (Jay's CDT2 Mk2) and frankly, I don't even turn on the turntable these days unless I don't have what I want to hear on CD. Measurements be damned, it sounds very natural, engaging, and just plain fun. I'm pretty sure someone somewhere measured noise from an Yggy outside of typical human hearing range two+ years ago and "objectivists" cast it aside as defective, but I can assure you, it sounds magnificent to these human ears.
Good combos are:
Transport -> Synchro-Mesh -> Reference BNC cable -> Metrum
Transport -> Synchro-Mesh -> Reference BNC cable -> Border Patrol
I would avoid any DAC that has reclocking inside on the S/PDIF input.
These will both realize the benefits of 7psec of jitter. Customers that have these are extremely happy.
I had an Ayre C5xeMP and did exactly what you propose. I chose a Holo Audio Spring Kitsune Level 3 DAC which I see has now been upgraded.
The sound was fantastic. I then decided to go on a sole CD transport hunt and sold the Ayre. In hindsight I should have kept it. This DAC is an R2R ladder design, the folks at Holo Audio are very helpful. Read some of the reviews and good luck on your journey.