The JSM20th is a hollow body electric guitar model introduced by Ibanez for 2001. It is a signature model for American jazz-rock guitarist John Scofield, commemorating the 20th anniversary of the introduction of the first Scofield signature model. It is made in Japan by FujiGen.
The JSM20th features a thin, double cutaway, semi-hollow body design with a maple top with ƒ holes and multi-layer binding and maple back and sides mated to a set-in African mahogany neck with a 22-fret compound radius ebony fingerboard with binding and acrylic and abalone split block position markers. Components include a pair of custom humbucking pickups with gold covers and individual volume and tone controls, a Gotoh Tune-o-matic style bridge with a Gotoh stop tailpiece, a bone and brass nut, a black pickguard, a ¼" output jack mounted on the face of the guitar, and Gotoh tuning machines.
The JSM20th is similar to the JSM100, which itself is a faithful recreation of Scofield's trusty 1981 AS200 which had long been his primary guitar. Primary differences between the JSM20th and the JSM100 are the figured wood top on the JSM100 and the custom pickups on the JSM20th.