+1 @bthrb4u
Don’t ruin a system like that adding room correction dsp. Those devices degrade the signal quality greatly.
You have a clean, quiet system. DSP generally adds noise. We work so hard to create black backgrounds and resolution...DSP may tame some things, but to me, adds distortion. I can easily hear this in Roon. EZ to try, then turn it off...
Room treatments and subwoofer placement, when indicated, are the way to go. Some are so easy...sub placement (for me wireless subs helped immensely), nice rug, treating reflection points, maybe even with bookcase etc. I added very attractive sound absorbing panels right behind my listening couch to good effect, and base tube traps in boomy corners. But sub placement was number 1.
Good luck! You have gotten great advice on DACs. While above your stated price range, the Master Fidelity C + D combo is amazing (it was above my stated budget also, but then I heard it!). I also enjoy my Tambaqui onboard a Mola Mola Makua, with the Grimm MU1 streamer. The MU2 is very nice, and eliminates a box and some cables. But the MF combo is sublime.

