The Precision Bass (often shortened to "P-Bass") is a bass guitar manufactured by Fender Musical Instruments Corporation. In its stock configuration the Precision Bass is a solid body, four-stringed instrument equipped with a single split-coil humbucking pickup and a one-piece, 20 fret maple neck with rosewood or maple fingerboard.
Its prototype, designed by Leo Fender in 1950, was brought to market in 1951, the first electric bass to earn widespread attention and use, remaining among the best-selling and most-imitated electric basses with considerable effect on the sound of popular music ever since.
The Jazz Bass (or J Bass) is the second model of electric bass created by Leo Fender. It is distinct from the Precision Bass in that its tone is brighter and richer in the mid-range and treble with less emphasis on the fundamental harmonic. It has a naturally more focused tone than the Precision Bass, with less low end and low mid-range. Because of these tonal characteristics, the Jazz Bass is often preferred by bass players who seek a more noticeable sound, rather than serving as a background instrument. The sound of the Jazz Bass has been fundamental in the development of signature sounds in certain musical genres, such as funk, disco, reggae, blues, progressive rock, heavy metal and jazz fusion
Check out the Guitar Showcase collection of Vintage Fender Precision and Jazz Basses below: