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 D Activator 7™ Bridge has the same loud yet clean sound as the best active humbuckers, and killer harmonics. The low “B” string is all about attack, not mud. It responds instantly to hard or light picking. In a word: it rocks. No batteries required.