MXR

MXR is a manufacturer of guitar effects units, co-founded in 1973 by three amazing music innovators (Keith Barr who went on to found Alesis, Michael Laiacona who later founded Whirlwind, and Terry Sherwood who went on to co-found Applied Research & Technology). MXR is now owned by Jim Dunlop, who continues to produce the original effects pedals along with their new additions.