Fuzz

The UF-01 Ultra Fuzz is the Fuzz box for the new millennium. Using the Color, Tone and "Reso" controls, any fuzz, past or present, can be emulated. But with the use of the variable Gate effects control, sounds only dreamed of can be obtained. Ergonomically designed rugged all metal box, gain, level and tone controls, a status LED and runs on a 9V battery (AC Adaptor optional).

https://zoom.co.jp/products/effects-preamps/guitar/uf-01-zoom-ultra-fuzz