• Audio Controle Inc. makers of hearing aid instrumentation.

• AudioMed, Inc. distributors of audiometric and other hearing related equipment.

• Babble Hearing aid, assistive technology, targetted hearing. Personal listening device Babble. Hear better in noisy conditions.

• Dudley Hearing Aid Products providing answers, products, services and information for the deaf and hearing aid user.

• Entific Medical Systems offers BAHA (bone anchored hearing aids and sound processors) and osseointegration systems for facial rehabilitation.

• Knowles Electronics Inc. cylindrical microphones, receivers, transducers, instrutments, directional electret controls, acoustics, piezo ceramics and vibration sensors.

• Micro-Tech Hearing Instruments provides solutions for the hearing-impaired and the hearing-health community.

• Oticon Inc. digital hearing aid instruments and assistive listening devices. General information on hearing loss symptoms, hearing impairment, and hearing aid care.

• Potomac Technology retailer of hearing assistive devices including TTYs, amplified phones, alerting devices, and specialty items.

• Tondi Electronics manufacturer of hearing aids.

• United Hearing Systems Inc. dedicated to the design, manufacturing, and maintenance of hearing aids.

• Widex international manufacturer of digital hearing aids.

• Williams Sound Corp.