Got my WM1Z and I’m listening.
It’s one of those odd seemingly incremental differences that is also a huge difference. Definitely stronger in the bass but mostly just more real sounding. Vocals seem slightly less forward but I think it’s that they are more organic and “rounder” so they have more depth. Some of my vocal test tracks are spookily real sounding.
There’s more definition in every way... more musical information.. The price difference wouldn’t seem to make the upgrade from the 1A worth it but as said somewhere, that 10% difference is all the difference in the world.
Soundstage is definitely more open with greater depth. That forwardness of the Campfire Audio sound that I’ve felt I had to adjust to is basically not really what it was. That is quite a change from the 1A.
The WM1Z shocked me when I first picked it up being twice the weight of the the 1A.