A collaborative effort between Jefferson Airplane's Jack Casady and Epiphone, the Epiphone Jack Casady Signature Bass takes after its short-lived cousin, the Les Paul Signature Bass. Like its predecessor of the '70s, the Jack Casady Signature Bass has just one low-impedance humbucker, along with an impedance control knob. The creation of this unique semi-hollow bass was actually spurred on by Casady himself, who approached Epiphone with his design ideas.