Streamer Advice / Recommendation for Denafrips R2R DAC

I really could use some help / recommendations on the choice of a streamer.  Here's where I am in my research:
I've decided on a Denafrips Pontus DAC (R2R) because of it's sound characteristics (musical while maintaining definition).  It is within my budget, while the Terminator is not.

My current thinking is I need a streamer that does not have memory, amplification or a DAC on board.  I will use the streamer-DAC pairing to listen to music in a AVR / Music setup: Denon AVR3700H (105 watts) connected to a Rotel 1590 power amp through the Denon precouts.  Bowers & Wilkins 702 S2 (left right) speakers.  Bowers & Wilkins 802 center channel (power connection by Denon amp)  SVS and Yamaha powered subwoofers. When used for streaming Netflix it's a 7.2 setup.

For streaming music I listen to the usual list of suspect: Tidal, Qobuz, Spotify.  In it's current setup, the system is too bright and harsh.  Speaker placement is in the room from acoustic hell: rectangular 15' x 45' with the front/ center channel speakers facing the narrow width (unfortunately by necessity and I'm in the process of adding reflection panels to cover 15% of the room.

I am determined to achieve music that does not wear me out after a couple of hours listening: well produced electronic music / R&B  / piano jazz.  I like midrange dominance but without too much detail in the +8k hz.

I learned to budget more for the DAC than the streamer, but most of the streamers I've looked at are combo amp/hard drive/DAC or they have networking into multi rooms. The  Auralic Aries G2.1  is out of my budget by about $2,500 (at 5,100 US), Willing to pay more for great sound but am unsure the streamer makes that much of a difference than the DAC.

Advice? Setup Recommendations?