The RB630 features a double-cutaway basswood and birch body bolted to a maple neck with a maple headstock and a 21-fret maple fingerboard with black dot position markers and black side dots. Components include a single Super P4 Precision-style pickup mounted in a white pickguard, a standard bridge with vintage-style saddles and 19mm string spacing, a plastic nut, Hercules B precision tuning machines, Sure Grip II knobs, and Dead End strap buttons.
For the 1986 the fingerboard was changed to rosewood with pearl dot position markers, the tuners were changed to Ibanez Smooth Tuner BIIs, the pickguard was changed to black, and the headstock was painted to match the body.
The RB650 is a similar model with an added Jazz-style pickup at the bridge. The RB680 is a related model with a pair of P-style pickups, a different bridge, and no pickguard.
