The DCBD4Set Dual-Ceramic Bar/Hum Cancel Pickups for 6-String Bass Guitars from aguilar use aguilar's dual-ceramic bar design to capture all the detail and character of your tone. A suitable replacement to the Bartolini P4, the pickups' uniform magnetic field ensure that no information is lost, making this a great pickup set for dynamic playing styles. Full-bodied tone with a rich sustain characterizes the sound of the DCB series, bringing out the best qualities in any instrument.