The Fender Jazzmaster is an electric guitar that was created as the Stratocaster's sibling. It was first offered to jazz guitarists at the 1958 NAMM Convention, but in the early 1960s surf rock guitarists began to take an interest in it. Although it differs tonally and physically from the Fender Jaguar in many technical aspects, including scale length, controls, and pickup design, it looks comparable to the latter.
The "offset-waist" body contour of the Jazzmaster was created to make it comfortable to play the guitar while seated, which is how many jazz and blues musicians prefer to do it. The guitar's other important features included a 'floating tremolo'[1] with tremolo lock, a full 25.5-inch (647.7 mm) scale length, 'lead' and 'rhythm' circuit switching with independent volume and tone controls, and a bridge with an unusual design. If one string breaks, you can manually engage the tremolo lock to prevent the entire guitar from going out of tune. There was an extra-long tremolo arm on the Jazzmaster as well. The Stratocaster's bridge and tremolo construction is much different from the Jazzmaster's, giving the latter a distinct resonance and typically shorter sustain.
A unique pickup circuit with "roller" thumbwheel controls and a slide switch at the top neck end of the pickguard is one of the Jazzmaster's most distinctive characteristics. The "lead" and "rhythm" pickup circuits can be chosen from using the slide switch. The pickup selector switch, along with the traditional tone and volume knobs, determines the guitar's tone when the switch is in the lead position. In the rhythm position, the two thumbwheels control the tone and volume, while the other controls are ignored. It just chooses the neck pickup with the brightness slightly rolled down owing to different potentiometer settings (50kΩ vs. 1MΩ in the lead circuit).
Information from:
https://www.fender.com/articles/instruments/15-stratocaster-players-for-the-ages
https://insounder.org/10-guitarists-who-swear-fender-jazzmaster
https://www.musik-produktiv.com/gb/
Kevin Shields - Not only did the leader of My Bloody Valentine pioneer the then-popular alternative style of "shoegaze" and revolutionize the music world at the turn of the 1980s and 1990s, but he is also regarded as one of the greatest guitarists in history. He was assisted in achieving that by the Fender Jazzmaster, whose design is perfect for experimenting with different distortions, tunings, vibrato, and feedback.
J Mascis - Another musician who is difficult to picture playing anything other than a Fender Jazzmaster guitar is the frontman of Dinosaur Jr. He has a sizable collection of them, and his signature models are available in two versions: a purple glitter version sold by Japanese Fender since 2007 and a white version introduced by Squier in 2011 at a lower price. Both versions have a gold pickguard and feature modifications designed by Mascis.
Thurston Moors - One of the main figures connected to Jazzmaster is the frontman of the old Sonic Youth. In general, they advanced guitar playing by taking this guitar apart, teaching it to play at extreme volumes, to moan, to sound in unusual non-standard tunings, and so on, in collaboration with his colleague Leo Ranaldo. However, the reason behind his constant use of the Jazzmaster as his primary instrument goes much beyond aesthetic considerations.
Tom Verlaine - The frontman of the band Television, an American New Wave icon, passed suddenly in January. Though we could also see him with other models, such the Fender Stratocaster, he was one of the first rock critics to support the Jazzmaster. This legendary guitarist, whose sound defined the trajectory of his band's career, particularly valued the Jazzmaster's unique tremolo, which characterized his playing.