The 540SC, or 540S Custom, is an S series solid body electric guitar model introduced by Ibanez in 1989. It was produced in Japan by FujiGen.
The S series is distinguished by the sleek double cutaway body shape which is arched on the top and back resulting in a fairly light guitar with thin edges.
The 540SC features a flame maple top on a mahogany body bolted to a maple neck with a 22-fret rosewood fingerboard with oval position markers. Components include IBZ/USA pickups made by DiMarzio with humbuckers mounted in pickup rings at the bridge and neck flanking a single-coil, an HQ synchronized tremolo bridge and locking Gotoh tuning machines.
The 540SC has a sculpted All-Access neck joint without a metal plate. It was among the first models offered with this joint type which has since become the standard for Ibanez guitars.