Dunlop fuzz face serial numbers9/23/2023 ![]() ![]() ![]() ĭallas Music Industries made a final batch of Fuzz Face units in 1976 or 1977, shortly after moving to the United States. The original instructions even described the Fuzz Face as a "Tone-Bending" unit. The main difference is that the Fuzz Face is biased slightly colder, making it more usable in warm environments. The Fuzz Face is particularly similar to the Sola Sound unit known today as the "Mk1.5" Tone Bender. Sola Sound and Vox had been using the same circuit topology for their Tone Bender pedals earlier in 1966. The circuit is based on the shunt-series-feedback amplifier topology - a standard in engineering textbooks. The arrangement of controls and logo on the box suggests a face. The pedal uses two knobs, one for volume, and one for the amount of distortion the pedal produces. The design was originally intended to be used as a microphone base for guitarists who sang. Ivor Arbiter "got the idea for the round shape when he one day saw a microphone stand with a cast iron base". The electronics are contained in a circular-shaped metal housing. Silicon transistors provided for a more stable operation, but have a different, harsher sound. Silicon transistors were used in later editions of the pedal. ![]() The earliest units used germanium transistors. Later units bear the "Dallas Arbiter", "Dallas Music Industries Ltd.", "CBS/Arbiter Ltd." or "Dunlop Manufacturing Inc." name. ![]()
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