Business: Originally Minneapolis Speaker Co., MISCO is one of the last U.S. speaker manufacturers. It makes high-end acoustical equipment for the gaming, medical products, commercial building, aviation, entertainment and other industries
Founded: 1949, by the late Cliff Digre, a gunner and radio operator on a World War II bomber, who was trying to fix his wife's radio.
President: Dan Digre
Revenue: $15 million in 2012, up 20 percent
Quote: "I think there's an opportunity for this to be a $40 or $50 million company. Dad would approve." -- Dan Digre