Beefing Up MM90

[Mossman]

Tried swapping out the magnets in my MM90 Axis. Replaced the stock Alnico V with Alnico II. Much more midrange punch, more P90. Sounds great and takes 10 minutes.

 

[xjbebop]

Interesting.
I'm personally pretty darn happy with the stock tones from my MM90 equipped guitars. Early on I experimented with height adjusting the MM90's on my AL MM90. They aren't set up to be adjustable from the factory. After a short time I returned them to the stock setup as I felt that was where they sounded best. I'm -very- fond of the Music Man MM90 pups!
I've got quite a few other makes & models with their own versions of P90's, and each one has it's own personality.
Nothing wrong with experimenting until you're happy...