They are out of business but you can get parts and service through "Noble Electronics can Service, Upgrade and Modify most EAD products - Amps, Processors, and CD & DVD players. We have over 15 years of experience in the design, manufacturing, repair and testing of all the EAD products. We were all members of the original EAD (Fairfield Iowa usa) R&D and Production team."
I have used them and they are first class. They can extract even more from these great units han when produced.