David Ellefson CBX IV Signature!Jackson designed and built the David Ellefson CBX IV Signature Series Bass to the Megadeth co-founder's exacting specifications. Contoured for extreme comfort, the instrument gives you effortless access to upper registers. Jackson's HiMass bridge delivers quick attack and robust sustain, while keeping intact your bass tone fundamental. The pickups, deployed in the neck and bridge positions, are active EMG HZ35 humbuckers; they serve up fat, punchy sound that cuts right through any mix. GearNuts bassists dig the Jackson David Ellefson CBX IV. We think you will, too.Jackson David Ellefson CBX IV Concert Bass Features: Designed and built to the Megadeth co-founder's exacting specifications Contoured for extreme comfort Effortless access to upper registers 2 EMG HZ35 humbucking pickups (neck and bridge position) Jackson HiMass bridge delivers quick attack and robust sustain