1970s styling, and a Greasebucket tone circuit since 2006. In 2008, the American Series models were replaced by a new American Standard line, which greatly differs from the first-generation American Standard Series basses introduced in 1994. The 2008 American Standard Jazz Bass retained the "American Series" rolled-edge neck with highly detailed nut and fret work, as well as the familiar rounded body shape with the vintage body radius, but deleted the S-1 switching system and incorporated a new high-mass vintage bridge, Hipshot lightweight vintage-style tuning machines, a richer and deeper neck tint, gloss maple or rosewood fingerboard and satin back for smooth playability. It also has a thinner finish undercoat that lets the body breathe and improves resonance. In March 2012, Fender updated the American Standard Jazz Bass (except the five-string version) with Custom Shop 1960s Jazz Bass pickups. To celebrate the 50th anniversary of the Jazz Bass, first introduced in 1960, Fender released in 2010 the 50th Anniversary Limited Edition Jazz Bass. This bass sports a selected alder body, finished in a Candy Apple Red nitrocellulose lacquer, and incorporates design elements from several periods in the instrument's history, including 1960s-era lacquer finish, headstock logo, chrome bridge and pickup covers, 1970s-era thumb rest and bridge pickup positioning, modern-era high-mass bridge and Posiflex graphite neck support rods. Design features The Jazz Bass has a bright sound, with more high end than the Precision Bass. This makes it ideal for slap playing as well as finger-style players. This bright sound is because of the two pickups at different points in the string's length. The bridge pickup gives a tone with more treble, while the neck pickup will yield a rounder sound. The ability to blend the volume of both pickups allows for a wider variety of tones than the Precision Bass can produce. Pickups are RWRP (reverse wound, reverse polarity) from one another, so all hum will be canceled when both pickups are at full volume. Having both pickups cranked up at full volume produces the classic scooped, "growling" sound which many players—such as Marcus Miller and Will Lee—use for slap bass playing. This sound is the product of certain frequencies from both pickups being out of phase and cancelling each other, leaving a "scoop" on the midrange. This is similar to what happens on some guitars when one blends the sounds from two different pickups, such as the Fender Stratocaster. Some