Sonore opticalrendu. I've had this for a number of years. Sounds great.

https://www.sonore.us/opticalRendu.html

Innuos was on my shortlist when I was in the market for a streamer without a DAC, However, in the end I purchased an Esoteric with a DAC. Unless your DAC is something really special, I’d suggest purchasing one with a DAC, that is also special. 

You do not need to spend big $ to get top-notch performance:

iFi Zen Stream: $400

Primare NP5 Prisma: $750

Holo Audio Red: $800

Pro-ject Stream Box S2 Ultra: $900

Volumio Rivo: $1100

Lindemann Audiotechnik Limetree Bridge II or the new Lindemann Woodnote Solo streamers.

Thank you All!  Great suggestions for research. 

I like hearing that I can get great quality without spending $5k.  I have two DACs that I like here. My Marantz PMKI Ruby SACD/DAC and Linear Tube Audio Aero.  I don't want to give them up. 

I have on loan from a friend a Lumin T3.  It sounds amazing. I'm using its DAC now. Really nice all around. But, a couple things I don't like.  The Lumin has no power button, which makes it wonky to reboot the unit--odd for a $5k machine.  Also, for $5k the display looks like my Speak and Spell from 1982. For $5k? I get putting all the money into parts, etc. But you've got to be kidding me. 

@mdalton ,  very intriguing. I may buy a couple of these and see how they hold up against the expensive competition.  The Holo looks great but the wait time for it to be built is long!