I would look at Linn. I can vouch for their high end streamer. While I have technically heard their all in one solution, I wasn’t really paying attention. But worth checking it out. Over the last decade or so, they really put some engineering effort into their DACs and streamers and have an all-in one solution.
Don’t get me wrong. For most of the last five decades I would only have thought of Linn as a turntable manufacturer. My dealer had me sit down with a top of the line Linn streamer / DAC feeding a Audio Research VSi 75 integrated amp about five years ago or so and I was blown away. Not something I would have thought in the realm of possibilities. Honestly… it really shocked me.
Having said that… unless you are willing top spend top dollar. I am not an advocate of all in one boxes… they can’t compete with top notch single function boxes (see my system… you’ll get the idea.)