The new Seymour Duncan 7-String Duality humbucker uses traditional alnico magnets, just like a passive humbucker, yet it's tied to an active preamp specifically designed to enhance it's natural and dynamic qualities, while delivering the headroom and power that active pickups offer. The result is an active pickup that will please any player - powerful and tight, yet dynamic and articulate, with a perfect midrange. This is a 7-string bridge pickup with black bobbins.