When CBS bought the Fender companies in 1965 a number of minor changes were made to the Fender Jazz bass. During 1965  bound rosewood fingerboards with pearloid dot position inlays were introduced replacing the original clay inlays of the early 1960s. The machine heads were changed to oval shaped. Block-shaped fingerboard inlays and an optional maple fingerboard were introduced in 1966. At first necks with rosewood fretboards received pearloid blocks and binding and maple fretboard necks received black. Fender switched to pearloid blocks and binding on all Jazz Bass necks in mid-to-late 1974.