Best Music Streamer to pair with Rogue Audio monoblocks and Pre-Amp

Streamers don’t have a sound and I agree software would be the focus.

Well that’s just completely untrue, poor advice, and the words of someone with little/no experience comparing streamers and/or has a system or ears incapable of revealing the differences. Both sound and software are vitally important, and discount either at your peril.

Aurender is excellent. Build quality, sonics, UI are all great. Solid as a rock.
The newest series is also Roon ready. 

@soix

+1

I’ve owned streamers in the $3K —-> $22K range and each step up rendered significant sonic improvements… pretty much like every other component does. 

All good choices! I have 2 nodes and the software can't be beat. That being said, I switched my whole front end to a Moon 390, which incorporates a streamer and I have been very happy. I now mostly listen to my NAS or lps. 

Moon makes great products with a terrific warrantee and I think the 280 is worth a try. The software is very good, not BluOS good, but very good.
Good luck and have fun!

@soix

who the h are you?  Another audiophile has a different opinion from you.  Dude! Get over it!