I was able to test the Sonos Ace for a few weeks.
Very good build quality and nice storage case with space for cords.
Ear cups are magnetic and can therefore be easily replaced.
The headphones fit comfortably on the head and when you take them off the sound automatically turns off.
Noice canceling works well, although I must say that when you put on the headphones you already experience a kind of natural noise canceling because it closes off all around your ears.
Even though they are over-ear headphones, my ears do get warm quickly, which I have had with several over-ear, but especially on-ear headphones, so my personal preference is in-ear headphones.
Pairing via Bluetooth to two devices (iOS) was easy and switching between the two devices also works fine.
Unfortunately, despite several attempts, I was unable to connect the headphones to my Windows 11 laptop.
The operation works with various buttons on the side. So it has no touch controls, which is otherwise fine and quick to use
The sound is also good, but not noticeably better than other headphones in the same price range.
Conclusion: Super nice quality headphones, noise canceling is excellent and the sound is also more than sufficient, but they are not outstanding.