i have the JZ3 on my American Series Jazz .
if you want the vintage tone , this may not be for you .
the tones are kickin' , smooth and crunchy at the same time ...
but not what i would call vintage sounding , imo .
the JZ3 is designed to be used with passive pickups , and i have a set of
passive Lindy Fralin's on my bass ...
the main gripe i have is the installation of the 9v. battery , it's a little tricky , but it can be done ...
here's a couple of shots :
