I have received my KZ AM16 bass today:

Wow! The bass is very powerful, and is way too much for me in general.
I am very happy though to experience such overwhelming BA bass - great job, KZ!
I can enjoy AM16 bass with bass-light recordings quite a bit.
Bass drivers can be felt with some vibrations up.to 11 Hz and more powerful response starts with 18 Hz - wow, mighty for BA drivers!
Hexa showed me the limits of bass-puny IEMs, and AM16 bass clearly demonstrated overwhelming bass BAs - fast and punchy (!) with the overwhelming quantity for me.
The overall tuning is the move from "V" to meta - about half way (?)
Compared to KB16 Cepheus, almost everything is less - even the bass, while less deep for Cepheus - more balanced overall and more capable. Treble is more with AM16 - and I personally like ir - but it would be a bit more punchy/protruding for most vs. refined KB16. Way more "BA sound" for AM16 vs. well-contained/tempered KB16.
Is KB16 worth twice more than AM16 - surely for me; 2.5-3 times -about at par. I got my AM16 from KZtws at $58, a bit more discounted options should be likely available.
Very impressed with overwhelming bass. AM16 balanced is ordered right away to get a more balanced IEM to me ears and collect all of them - all-BA KZ pokemons :]