I owned a Fender jazz deluxe and I tried all mean to change that metallic high sound from the bass. If turn the tone to zero it disappear, but it lost the attack. I even change to Lindy Franklin pick up but it doesn't help.... I've heard many fender bass has this metallic sound and seems they don't have a problem with it. One day I played my friends passive jazz bass with Seymour Duncan pick up, it is the dream tone I've been looking for. When I turned up the tone all the way with bridge pick up, it is crystal clear and punchy!! A little like those old funk Bass tone. But he did not willing to sell me.. I really want to know if it's my active bass 'a preamp problem? It's there any clip with Seymour Duncan SJB03 clip with passive jazz. I really want to know if I buy a passive jazz with Duncan, that I can get that kind of sound .