I am using 6 string active fretless (soapbar)and NOT happy with current pickups/preamp.This is custom necktrough . I understand its hard to get every possible sound on the same bass... Here what I am looking for : Punch! Good Lows(on both pups) and That Jaco Tone on bridge Pup. What would be the best combination (Pup-preamp) for that kind of sound. Any ideas will be highly appreciated!