Jerry - take it for what it's worth because it's purely subjective. I think everything is relative. In my setup, it already sounded amazing before the upgrade. My 12th is part of my primary system. In my next room, I have a budget setup, but I was able to get it sound very good, but obviously still shy of my primary.
After upgrading the firm, I believe everything sounded better. I just sat down and enjoyed a super long playlist on both headphones and speakers how good everything sounded, great tone, engaging, even more instrument separation, layering and immersive holographic sound. Of course, I doubt my own judgement, so I go back to my secondary setup, which I used to enjoy as well, but not as much. Could not listen to it. Flat, unengaging, lacked refinement...just bleh...
So, yes I think I noticed an improvement, just a little better at everything - very happy at this price point and small footprint to get this kind of sound in a simple setup (Ares 12th, Bakoon Amp-13R and Buchardt S400Mk2, HiFiman Susvara). Doesn't leave me wanting more at all....just makes me despise my secondary setup which I use to enjoy.