Benson Medical Instruments Co.Envoy Medical, Inc.GN ReSound North AmericaHarris Communications, Inc.Hearing Components, Inc.IntriCon Corp.MAICO DiagnosticsMicromedics, Inc.Micro-Tech Hearing InstrumentsMiracle-Ear®, Inc.Sonic Innovations, Inc.Starkey Laboratories, Inc.Telex, Inc.Unitron Hearing U.S.