Back by overwhelming demand, the Electro-Harmonix Green Russian Big Muff effects pedal is now available in this modern mini package. The cult classic Green Russian Big Muff first shook the ground in the mid-1990s. Since then, it has been heralded by guitarists and bassists for its devastating low end and unique sludge and sizzle. This Green Russian Big Muff creates a huge tone that is all its own, but is undeniably Big Muff.