DiMarzio DP719 D Activator 7-String Neck Pickup (Green With Black Poles)Active humbuckers have a distinctive sound: powerful, clean, open sounding, with excellent harmonic overtones and very tight lows. This also fits the description of a great 7 string pickup, if the problems associated with active pickups sterile sound and limited headroom could be eliminated. The D Activator 7 models do just that. The Neck model has both power and clarity the low "B" string stays solid and doesn't sound like mud with extreme overdrive,