The GT500 is simply 2 pedals in one:
The (Left) Booster/OD side of the pedal is a 100% discrete JFET circuit utilizing True-Bypass
switching that can be used by itself or in conjunction with the Right Side of the pedal.
It excels at Clean Boost sounds and has a tremendous amount of Input headroom to accommodate
even the hottest Pickups, yet can be pushed into Overdrive/Distortion sounds via its Drive knob.