DiMarzio DP268F Dark Matter 2 F-Spaced Humbucker Bridge Pickup (Black and Cream)Steve Vai is constantly evolving and expanding the limits with his playing, composing, and instruments. So when he approached DiMarzio about pickups for a new incarnation of his signature JEM, they developed Dark Matter 2 Neck, Bridge, and Middle models. These pickups are specifically EQed to match the earthy, organic aura of the new guitar. High output pickups can sometimes have anomalies in the high register, meaning they have some sharp edges.