Big Muff, made in Russia Functionality confirmed Comes with box, but paint is peeling "Big Muff Russian" refers to the guitar effect pedal "Big Muff" manufactured by Sovtek in Russia in the mid-1990s, especially the green-cased version (Green Russian Big Muff) is famous. This model is a fuzz, but it's closer to a fine-grained distortion than previous models, with powerful low frequencies, and is also suitable for bass. Features: Sound: Characterized by a thick low-end and fine distortion, a sound that is between fuzz and distortion. Enclosure: The most famous is the army green enclosure, reminiscent of military equipment. Variations: Tall Font Era: Early models with tall, vertical lettering. Bubble Font Era: Later models with rounded lettering.