GRX150 is a model name which has been applied to several distinct RX series guitar models. Each of these guitars is very similar with an HSH pickup configuration, a pearloid pickguard, a synchronized tremolo and dot fretboard inlays. Significant differences are shown below:
- GRX150 (2006–2017); made in China; basswood body, rosewood fretboard, FAT-10 tremolo
- GRX150 (2018–2019); made in China; poplar body, treated New Zealand pine fretboard, T102 tremolo
- GRX150 (2021); made in China; basswood body, rosewood fretboard, FAT-10 tremolo, Infinity R pickups