The JSA20 is a JSA series acoustic/electric guitar model introduced by Ibanez in 2013. It is the flagship acoustic signature model for American guitarist Joe Satriani. It replaced the JSA10.
The JSA20 features a classic, thin-waisted body with a Florentine cutaway with a solid Englemann spruce top with abalone purfling and white binding and solid rosewood back and sides with a gloss finish. The soundhole is round with an abalone rosette. It has a satin-finished mahogany neck with a 20-fret ebony fingerboard with white binding and abalone dot position markers. The headstock features a reproduction of Satriani's signature. Components include an Graph Tech TUSQ saddle in an ebony bridge with Ibanez Advantage pins, a white Graph Tech TUSQ nut and chrome Grover tuning machines. Electronics consist of a Fishman Acoustic Matrix pickup connected to a Fishman Aura Pro preamp with Joe Satriani original preset sound, onboard tuner, a 9V battery and ¼" endpin output.
In 2017 the solid rosewood back and sides were replaced with pau ferro. For 2019 the mahogany neck was replaced with nyatoh.