Fishman Fluence 8-String Modern Humbucker Alnico & Ceramic Pickups Set, Black Plastic Our Modern Alnico Humbucker offers guitarists all the musicality, power and explosiveness of alnico Our Modern Ceramic Humbucker offers guitarists the Multi-Voice soul of your favorite passives, with the power and brutal aggression youd expect from an active humbucker. 9-volt or optional rechargeable battery pack