The Dunlop Fuzz Face JH-1 is a guitar pedal that is a part of Dunlop’s Fuzz Face series. It operates on a negative ground circuit and utilizes NPN silicon transistors.. However, it has been criticized by R.G. Keen for its sound quality, suggesting that it may not meet the expectations of some musicians. http:/ftwvw.geofex.com/article_folders/fuzz face/fffram.htm

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