Electro-Harmonix NANO OPERATION OVERLORD Overdrive PedalA nano sized version of the Operation Overlord with the same great overdrive and distortion tones, but in mono for those who dont require stereo ins outs. Its super versatile and ready for your axe be it guitar, bass or keys. The EHX Nano Overlord is switchable between two modes: Normal and Boost. Normal mode provides low to medium gain sounds and relies on three amp like JFET gain stages. When Boost mode is engaged its like adding a pedal type OD