Aguilar 6SDD4SET 6-string Super Double Dual Coil Soapbar Bass Pickup - D4 SizeBuilt from the ground up to be a unique beast, two rows of Alnico V magnets come together to create a big, thick and growly tone. Complete with hum cancelling performance, this pickup is the perfect blend of strong dynamics and rich overtones. These soap bars deliver powerful tone in a passive configuration and can also pair with an Aguilar preamp for robust boost and cut in your tonal shaping. Specifications: 6SD D4 6 String Replacement for Bartolini