Set with neck and bridge pickups. TransSensor bass pickups utilize the patented "current bass" design. Result: huge punch and piano-like one through a passive design. Five times signal to noise ratio as compared to other conventional bass pickup designs. Beautiful grand piano "slap and pop," get incredible clarity with a huge punch without the noise. The Lace TranSensor® accurately reproduces the natural tonality of the bass with added articulation for, chords, runs, walks, or solos! The Lace TranSensor® P&J-Bass pickups cut through the mix and stay out of the mud. A well-balanced mid-range punch and a warm bottom-end with that added bright clear, Grand piano attack when needed. This is our favored pickup of choice with our endorsed artists. A J-Bass sensor is available in a neck model also.