I had them in my 77 P bass when I bought it (converted to PJ by a previous owner). That bass is ash/maple and naturally aggressive. With the QP pickups the bass was insane! No tone but clank and twang. It also had no tone control so that was a contributing factor. I have since switched to a set of Geezers with the VVT setup the pickups come with. They sound great but do not quite get the snarl the QP pickups had. I have decided to stick with the Geezers as they can get aggressive as well. I am also a 90% pick player and enjoy an aggressive bass.