I think the Glockenklang pre works pretty well with the Nordy pickups, the combination is rich, growly and "big" without being bloated or overly hi-fi.
The NJ4SE's are very growly sounding pickups so it's not hard to get growl with those on board.
W
Will, the thing that has steered me away from the Glock preamp is the high treble frequency. The one in your bass is custom and has a different frequency point.

