I'm really enjoying these pups. They have a great slap tone if you boost the bass and treble a bit and totally boost mids. At least, that's the setting I use for this bass. I'm not much of a slapper, though, so my tastes may not be quite as refined as some.
The controls along the bottom are, from back to front, bass, mid, and treble. The mid has a push-pull frequency selector of 250 or 800hz. The 2 knobs above that are just blend and volume, with an active/passive push-pull on the volume.
It's funny how little things really make a difference, but one of my favorite thing about the electronics is simply that I mounted the output on the front rather than the side. That's definately how I will continue to do it in the future.