Streamer's without built in DAC options?

How come no one mentioned the dCS network bridge?  

1) Allo DigiOne Signature with Shanti power supply
2) Pi2AES (from Michael Kelly)
3) Metrum Ambre
4) Mano Ultra
5) SotM trio
6) DCS network bridge

You won’t regret going with a Bryston BDP2 or BDP3 player “made in Canada”. The software is a bit clunky but functional.

I've tried many streamers: Lumin, Auralic, Naim, etc. I didn't like them. For me, the best option was this setup from small green computers:  sonicTransporter i5 (Gen 3) – Small Green Computer and  Signature Rendu SE optical Level II – Small Green Computer
Absolutely the best of all I tried.

Good luck!

How come no one mentioned the dCS network bridge?

it isn’t a streamer, you to stream to it, not from it

I also see many recommendations for streamers that aren’t Roon servers. assuming the OP wants a Roon server given he is using a Nucleus,

of course.. given the very vague stated needs, we don’t really know