Got my Killer B today.. sounds great.. it didn't work initially and had to separate the ground log from the battery log at the output jack.. mine came with the Bartolini NTMB +FL preamp.. the body work is great as well... I'll work on the shielding as it's not fully shielded.. Workmanship is great as well.. no sharp edges and plays well.. I'm surprised about the neck profile... despite being 19mm it's slimmer than my Yamaha TRB1005J that's 18mm. It's a smart neck.. slightly smaller body and not too heavy...
but I felt that experimenting on this bass is a little easier than my 17mm spaced 5 string.