The 540S-CT6 is an S series solid body electric guitar model introduced by Ibanez for 1990. 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 540S-CT6 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 F1 and F2 humbuckers mounted in pickup rings at the bridge and neck flanking a noiseless, stacked single-coil, an HQ synchronized tremolo bridge and locking Gotoh tuning machines. The middle pickup is listed as a C1 in Japanese materials and as a C2 in US catalogs.
The 540S-CT6 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.