Bass

DE Set

David Ellefson's dual-coil (DC) pickup in the bridge and a ceramic & steel (CS) in the neck

FB Set

PCSX + LJAX, the Frank Bello Signature Set

GZR P

Geezer Butler's signature Passive P Bass Pickup

GZR PJ

Geezer Butler's signature Passive PJ Bass Pickups

Les Claypool LC Set

Les Claypool Signature ‘Pachyderm Gold’ P-Bass Pickup