Hi All!
I usually play MusicMan basses, but when i saw the Blacktop Precision, i was very curious

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So i bought the Blacktop Precision, since i prefer Stingray / Precision necks over the narrower Sterling / Jazz necks and was hoping to get a jayy-like tone, at least after some modification
Unmodded, the pickups are each wired in series. The bass sounds fine to me, i can't compare to an actual precision or jazz bass, but i guess it's quite close to each of them.
So far i included a Series / Single / Parallel switch for each of the pickups. This opens a huge range of sound possibilities. In particular, the single-coil sound seems to be even closer to an actual jazz bass (i only compared this to some Ed Friedlands youtube videos). And the parallel sound has far less mids, but crispier highs. The only drawback is the noticably higher output in the series-configuration. I'll see what i can do about that...
So i can highly recommend this small modification to anybody who likes to experiment a little.
I plan to replace the two volume pots by a single volume and a balance pot. Moreover, i might add active/passive switching and add a 2EQ with a stacked pot to replace the passive tone control (I only use the tone control fully up, anyway).
So i guess it's a great bass with a lot of opportunities. Of course you get the switching option in a G&L L-2000 tribute for even less money, but i guess the G&L pickups will also sound pretty different since they use bigger single pole pieces instead of the pairs of smaller pole pieces used in the Blacktop Precision. Plus: You do not have the fun of soldering and modding

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Cheers,
Markus
P.S: I used the wiring shown on this webpage:
GuitarNuts.com - Humbucker Switching