An Orange amp in a box. The Orange Gateway Driver is an Overdrive pedal which will send you into vintage territory. It's Class A circuitry delivers a rich harmonic content while staying responsive to your playing.This amp-in-a-box needs no more than three dials to get from a cranked AC-30 to a solid creamy blues-rock experience. The bite knob works as a tone control which focuses on high frequencies while leaving the lows pretty untouched. An internal switch even rolls off frequencies above 20kHz. The additional buffered headphone out with cab simulation can be used for quiet practicing, to go straight to an interface or via a di-box to the PA. Nice add-on! The pedal operates on a standard 9-volt power supply to emulate EL84 valves or 12-volt for the EL34 flavour.The Orange Gateway Driver is definitely worth a ride!