I really like the concept behind the filter knobs. So different from most other basses, where I usually have the tone wide open.
Welcome to the warm, wet world of filter-driven tone circuitry... there ain't nothin' else like it.
Regarding the FatBoy; there are a bunch of threads in this section with commentary and comparison. Just search that term (and variations of it) and you'll find them. One thing is for sure, they're not for every one of us... 'jazzyvee' tried them in his Stanley Clarke Sig. and found he preferred the standard AXY's. Our buddy 'bigredbass' liked them so well that he put them in both positions of his Big Red Spoiler.
My firsthand experience is limited to my own Custom, which has a FatBoy in the bridge position and an AXY in the neck. Compared to my other two Alembics with AXY's only, the bridge pickup can do so much more on its own, especially for fretless glissando work. If you're somebody who occasionally solos out the bridge pickup, then I highly recommend you try one. If you tend to strive for keeping a good balance, I probably wouldn't bother. There's no modification required to install one... just unplug one and plug in the other, so you could feasibly try it, and sell whichever pickup you don't prefer.
Happy Hunting.
