The electro harmonix nano big muff pi distortion is an updated pedal icon with all the tone but halved in size. Its a stompbox thats been adored by an endless list of musicians from jack white through to david gilmour just a taste of the rockers that have put the muff into their music. And now its shrunk in size so you can get the full potential of the nano big muff in just about any situation.its loved by many but what does it do? Well if youve ever wanted the power to create a wide array of tones from the subtle to the downright outrageous this is it. Because the nano does it all. As soon as you plug it in you instantly hear why this pedal has been revered for countless generations. Save space without sacrificing a drop of tone or character. This is distinctly a big muff just smaller.