This pedal is as advertised, mint condition. Plugged in just one time to test. Like the original RAT, this distortion pedal includes a silicon clipping circuit, yielding you the classic harmonic-rich sound that's been a pedalboard staple for more than four decades. But unlike its predecessor, the FAT RAT includes a selectable MOSFET clipping circuit, supplying you with a smoother upper midrange than a standard RAT. What's more, the FAT switch produces thunderous low end and a simultaneous high cut that's tailor-made for bass and down-tuned electric guitars. This amazing dirt box boasts a familiar 3-knob layout, along with a rugged on/off footswitch and a status LED. This pedal is for no joke shredders who are looking for that 80’s metal thunder. It is the real deal. Includes an 18v Power Supply