[quote name='JimBobTTD' timestamp='1432320560' post='2780530']
Mmmmm, nice! More info about the filter preamp, please!
Edit: it's in the link. Not just pictures!
[/quote]
Essentially you can have pretty much any combination of the three. The central pickup is a humbucker, the neck is a single coil and the bridge is an overwound single coil. Humbucker goes into one filter stack, the other two can be soloed or combined in series or parallel into the other filter stack and the blend takes care of the mix.
So far liking the bridge soloed with some humbucker blended in the most. Early days of course.