In steady production since its introduction nearly 30 years ago, the Ibanez Soundgear (SR) series is a line of electric basses first sold in 1987. The SR bass replaced the popular RB "Roadstar II Bass" series, and, in fact the first production SR bodystyle is the next logical styling progression of the RB 850(Deluxe) Bass model. The 540R RADIUS was visually the 6-string partner of the RB850, and the two shared many traits that were incorporated into the SR, including the rounded-off angles, fully arched-top, slightly smaller size, and super-sleek lines. The main objective with the SR bass was to have a thin, fast, and smooth professional-grade bass that you could count on as much for the durability as the playability, and for the value as well as comfort. The body was thinned, subtracting