Similar to the Classic Stack, but with increased output and a thicker-sounding mid-range response making it better suited for rock tones. Comes with four-conductor hookup cable and logo cover.
More info here: http://www.seymourduncan.com/products/bass-pickup
s/pickups-for-jaz/4string/stkj2_hot_for_j/
Demo by the Kinky Wizzards: http://on.fb.me/WeA9Wq