The S540-7 is a seven-string S series solid body electric guitar model introduced by Ibanez in 1993. It was made in Japan by FujiGen. It replaced the very similar 540S7.
The S540-7 features a mahogany body bolted to a maple neck with a 22-fret rosewood fingerboard with pearloid dot position markers. Components include DiMarzio Blaze pickups with a humbucker at the bridge and single-coils in the middle and neck positions, a Lo Pro Edge 7 double locking tremolo bridge and Gotoh tuning machines.