Using Aguilar's dual ceramic bar design, the Dual-Ceramic Bar / Hum-Canceling Pickups for 4-String Jazz Basses introduce a unique voice for jazz style basses. These passive hum-canceling pickups are engineered to deliver higher output versus traditional passive pickups and are characterized by their full-bodied tone, rich sustain, and even dynamic response. A great choice for any player looking for a new dimension in sound.