The Ibanez 540R HH is part of Ibanez' Radius series and features a very distinguished body form. The contoured body shape is beveled around the outside edge also called the aerofoil edge, which pulls the body closer to the player for comfort in playing. The Ibanez 540R HH has an HH pickup configuration as oposed to the HSS configuration in the Ibanez 540R. In 1990 the pickup selection toggle moved from between the two pots to a spot closer to the volume pot. From 1990 the 21st fret featured the inlay "Custom Made". Other features are:
The Radius series including the Ibanez 540R HH are the basis for Joe Satriani's signature guitars.