D'Addario is a manufacturer of musical instrument strings and accessories, primarily for guitars but also many other fretted and orchestral instruments. The company also produces and distributes other musical accessories under other brands. The company was founded in 1974 by James D'Addario, originally producing guitar strings. The company is still family-owned and operated, with Jim's son, John D'Addario III, serving as CEO. The company is headquartered in Farmingdale, New York, and has manufacturing facilities in New York, California, and Texas, as well as distribution centers in Canada, England, Germany, France, and China.