I have poked at Maestro a little bit to try to understand what it brings to the table. I found two things.
Overall I think it is a pretty neat tool that is worth looking at.
First of all it is an alternate UI for Qobuz. At first glance, at least, I don’t see the Maestro UI as being better than the Qobuz one, but it is still very useful.
The second thing is pretty neat, the Prism Remastering Suite. Prism, I believe, is the tool that Octave Records (PS Audio) uses to do their final mixes. Note that this is similar to what Roon provides with it Muse processor, except that Maestro doesn’t depend on the performance of your computer to produce a result.
What Maestro gives you is a way to remaster tracks, that is use the final stereo mix and digitally edit it. I doesn’t let you, for example, fix the level of a particular insturment, you would need the original multrack recording to do that. But it does let you fix up a lot of other issues.
What makes it interesting, IMHO of course, is that you a fix a track, an album, or a zone… everythng you play. Maestro remembers what track, etc you made the fixes and recalls them when you play that track, etc. Pretty neat! You are actually making you own remastered recording!
You you can fix every track, etc to work the way you want it to work in your room… zone… device. You are able to make custom remixes for every way you listen to your music.
Of course once you make a remaster you are no longer playing a bit-perfect streams and you will introduce some distortion, but it may be too little to hear or it may end with an overall effect that is a plus. Only your ears can tell.
The Prism Matering Suite is disabled for now, but PS Audio says it will be turned on next month.
Dan