Anyone ever try one of these. I play a passive P-J custom. Its a 36" scale 5 string, which gives it pretty great fundamentals and low bass. But th maple fingerboard makes it sound bright. I am just looking to get more growl and midrange/low mid flavors. They are like $100. I am not interested in going active. I researched TB and the stellertone b/f posting but I have not seen anything useful- somebody who has tried one for bass and can share their opinions. much appreciated.