Dunlop Manufacturing, Inc. is a manufacturer of musical accessories, especially effects units, based in Benicia, California, United States. Founded in 1965 by Jim Dunlop Sr., the company grew from a small home operation to a large manufacturer of music gear. Dunlop has acquired several well-known effects pedal brands, including Cry Baby, MXR and Way Huge.
Scottish immigrant Jim Dunlop founded the Jim Dunlop Company in 1965 as a part-time business while working as a processing and chemical engineer at Barr and Stroud in Glasgow. He was an apprentice of creator of the first hip replacement, William "Bill" Wallace. His first product was the Vibra-Tuner, a small device that attached to a guitar with a suction cup and displayed whether the guitar was in tune with the vibration of a small reed.