The internal DAC in the Mini (and supposedly the Pro) isn't terrible at all. Read Amir's review again with a positive attitude. It's plenty good enough for CD quality all day and can do better on higher res material. No, it isn't one of those doomsday 32bit/768k foo-foo DACS that high-end companies want to sell for $3000, but surely it's plenty good enough to be an order of magnitude better than your speakers. I'd try it out and see if you can live with it. A lot of stuff you stream may say UHD, or so, but it comes mostly from 16/48k files and 16/41k CDs. Some of their files are actually high res, but most of the material recorded before about 2005 or so was 16 or 24/48k in the studio. Music streaming services tend to say their files are "high res" because they upscale those files to something like 24/192k to justify charging you $20 a month for their service. (I have noticed that Amazon Music has been scaling back somewhat on doing this. Don't know if Tidal or Qobuz is.) There's little point to taking a 16/48k file and upscaling it to 24/192k, is there?
.....
In truth, I use 2 Minis. One feeds optical to a Modi3 because the Modi was already there. The other feeds the internal DAC inside a Denon PMA600NE, which is about the same quality as the Mini DAC. Again, the Denon was already sitting there with an available optical input.
I have tried the Mini analog out to the Denon analog input. Sounds fine. It's not better or worse than the Denon's internal DAC. The sound is a bit different, but I can't say one is "better." Just different.
Others here may think they have more golden ears; enjoy that fantasy.
PS: The Mini can't presently do better than 16/48k when playing to 2 or more systems at once. The Pro is expected to eliminate that issue in the future. You might, for that reason, prefer buying the Pro. But the feature is only promised, I think.