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Sustaining Members

ETS-Lindgren has more than 75 years of combined company experience and expertise. We were formed by joining a number of leading companies which pioneered many of today's widely accepted products and practices in our industry. Not surprisingly, ETS-Lindgren continues to maintain its reputation as a leader and innovator today.


As part of ESCO Technologies Inc., we have the financial strength to meet our commitments, both today and tomorrow. A leading supplier of engineered products for growing industrial and commercial markets, ESCO is a New York Stock Exchange listed company (symbol ESE) with headquarters in St. Louis, Missouri.

Acoustics Systems
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Audioscan instruments carry the industry’s only 2 year parts and labor warranty. This is made possible by careful attention to design and the very latest manufacturing methods and technology. Extensive self-testing each time power is turned on catches potential problems before they impact your results.


Within the USA and Canada, we provide free shipment by overnight courier of all parts replaced under warranty to minimize your down time. Because the parts most likely to fail are user-replaceable, in most cases you will be operational within one business day.


If you encounter a problem, please:

Record the exact error message or self-test failure.


If there is no error message or self-test failure, note the circumstances that caused the problem in as much detail as possible.


  • Follow any on-screen instructions

  • Consult the Troubleshooting section of the User’s Guide or on-line help

  • Complete our online CUSTOMER SERVICE FORM or call 1-800-265-2093 between 8:30AM and 4:30PM, Eastern Time, for one-on-one help. Please have the instrument model, serial number and software version available.

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Bio-logic Systems Corp., headquartered in Mundelein, IL, a northern suburb of Chicago, was founded in 1979.  Natus Medical Incorporated acquired Bio-logic in January 2006 and continues to design, manufacture and distribute an integrated family of hearing screening & diagnostics, neurodiagnostic and sleep diagnostic systems and supplies under the Bio-logic brand. 


Hearing AssessmentNatus, the leader in the hearing assessment market with the Bio-logic brand of products, offers integrated solutions for hearing screening and diagnostics. Nurses, audiologists, otolaryngologists and trained technicians use our systems for objective screening and diagnosis of hearing loss. We incorporate the latest technology and techniques including Otoacoustic Emissions (OAE) - recording and analyzing echoes generated by the inner ear in response to acoustic stimulation, Auditory Brainstem Response (ABR) - recording and analyzing electrical brain activity in response to acoustic stimulation and the Bio-logic brand Auditory Evoked Potential (AEP) software.


All Bio-logic brand systems are modular and can be upgraded easily with proprietary software additions to serve as a cost effective single solution for all screening and diagnostic needs.

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About Grason-Stadler

 For over 60 years  Grason-Stadler (GSI) has been "Setting The Clinical Standard" in Audiometery, Tympanometry and hearing healthcare diagnostics. Far more than a tagline, it is embedded in our corporate DNA and is the driving force behind everything we do. Market feedback confirmed that GSI is seen as the Clinical Standard. It also established the three attributes most identified with the GSI brand; Quality, Reliability, User-Friendly.



Quality was by far the most frequently used word by our partners to describe the company and the brand. Product quality has been a hallmark of the GSI brand over the years, and remains the predominant association people have with the company to this day.



Reliability, durability, longevity, trustworthiness. GSI products exceed industry expectations regarding reliability. It has become another way of defining the organization and a proven benefit of a partnership with GSI.



As hearing healthcare technologies have developed, the vast number of potential features can become quite overwhelming. This is why GSI has always worked closely with our Partners to identify and prioritize what product functionality is most important to them, how it should be conveyed, and what will provide maximum user and patient benefit.

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More than just a product …

At Interacoustics we design and manufacture equipment across the whole audiological spectrum. Our products range from small portable devices to full clinical instruments and can be found all over the world wherever hearing health care is practiced. This is one of our strengths, because it enables us to provide integrated solutions whatever your situation. And with more than 40 years experience, you can be sure we have the insight required to make solutions that work for you. But Interacoustics is more than just a product. We make it our business to keep in touch with those who use our equipment. A worldwide network of trained distributors supports you at the local level. In addition, our website is kept up to date with the latest developments. You will find full product information there and extensive troubleshooting assistance.


Integrated solutions ...

Integration is not just about machines talking to each other. It is about human beings and machines. We design our interfaces with common standards and common terminology, making the learning curve on our equipment easier. That lets you spend your time on the results. After all, you bought the equipment for a purpose. We start our design process by focusing on that purpose.

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For more than seven decades MAICO has been an innovator in audiological instruments, developing, producing and distributing reliable products ranging from hearing screening to diagnostic solutions.


MAICO has grown over the years to fulfill the specialized needs of the growing field of audiology. From screening audiometers for school nurses and General Practitioners to complex diagnostic instruments for in-depth examination, MAICO provides novel and efficient tools for hearing professionals.


The future of MAICO is to continue our commitment to providing state-of-the-art technology; fast, reliable service; usability and customer support.

Maico Diagnostics
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Micromedical is the recognized leader in vestibular and balance testing instrumentation with 25 years of experience.


Providing insight into the complexity of the balance system

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Otovation was founded in 2003 to design, develop and market advanced diagnostic products for the hearing care market. Since its founding, Otovation has developed and introduced the first portable and wireless systems for both the screening and diagnostic segment of the audiometry market, and we continue to develop advanced technologies and innovative products for improving the efficiency of hearing health care delivery.


In 2010, Otovation introduced its OTOPod M2, the first and only product that combines diagnostic audiometry with hearing instrument programming, resulting in a complete and portable testing and dispensing solution for Widex hearing aid dispensers.


Otovation is headquartered in suburban Philadelphia, Pennsylvania and operates directly or through distribution partners in more than 30 countries around the globe.

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Otometrics is the world’s leading manufacturer of hearing and balance instrumentation and software. Over the last 50 years, we have provided solutions ranging from newborn hearing screening applications and audiologic diagnostics to comprehensive hearing instrument fitting and balance testing under the MADSEN, AURICAL, HORTMANN and ICS brand names. Headquartered in Copenhagen, Otometrics is part of GN Store Nord and the ReSound group.



There is more to Otometrics than just instrumentation. The value of Otometrics as a partner is about our commitment to our users and their clients. The reason why major sites around the world have chosen us as their preferred partner is more about Trust in basing their mission-critical activities on what we provide. Our strong worldwide team of experts is determined to carry this legacy into the future.



Meet us online at to learn more about our company, our way of thinking, and the way in which we support you in your endeavors. We always welcome a dialogue.


United States HQ

50 Commerce Drive, Suite 180

Schaumburg, Illinois, USA 60173

Tel:1(800) 289-2150


Denmark HQ

GN Otometrics A/S, Hoerskaetten 9, 2630

Taastrup, Denmark

Tel: +45 45 75 55 55

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PATH Medical is a German company dedicated to developing and manufacturing state-of-the-art hearing diagnostic equipment. We have worked closely with GN Otometrics in the design and development of the new Accuscreen device, which is well known for the newborn screening application.


We have also designed two systems under our brand, Senti and Sentiero. Both systems are available as either handheld or desktop devices with a color touch screen that can perform audiological tests quickly and accurately. The Senti is a portable screening audiometer with the possibility of adding speech and play audiometry. The Sentiero includes the audiometer capabilities as well as physiological tests such as OAE, ABR and ASSR. The Sentiero Desktop option combines audiometry with OAE and full clinical tympanometry. The later features are designed and engineered for the purpose of follow up for babies that are referred after newborn screening and for children or occupational screening purposes. They provide information on a diagnostic level using the latest technology available. This means the Sentiero is the first handheld device to include a diagnostic ABR and ASSR! PATH medical devices combine the superior quality of German engineering with portability and ease of use.

Both the Senti and Sentiero devices have been cleared by the FDA for sale in the USA, and are also sold worldwide through our distribution network in over 40 countries.

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Path Medical Solutions
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Vivosonic Inc. first formed as a business in 1999 when Yuri Sokolov applied for and was granted the G.R. Heffernan/Co-Steel Innovation Commercialization Fellowship. This generous support by our current board chair, Dr. Gerald Heffernan, allowed Xinde Li and Dr. Sokolov to commercialize the advanced signal processing technology Li had developed while both were researchers at the University of Toronto (Institute of Biomaterials and Biomedical Engineering). This technology, based on Kalman filtering, later became the patented algorithm that is the foundation of many of our products today.


In 2003 Isaac Kurtz, VP of Research and Technology, joined the Vivosonic team. Under his direction, innovation and research has remained a large part of our corporate culture. With each product we bring to market, we strive to incorporate this spirit through the engineering of ingenious and sustainable solutions that address our users’ clinical challenges, while also increasing the level of care they provide their patients.


In 2005 we launched our flagship product the Integrity. It is the first AEP/OAE system which allows the user to reliably perform ABR diagnostics without sedation or fear of other acoustic or electromagnetic interferences.

Most recently, we have ventured into the Newborn Hearing Screening market with our Automated ABR system, the Aurix. Utilizing our patented algorithm, it is already demonstrating its ability to screen awake or stirring babies more reliably.


The Vivosonic team and our investors are equally poised to continue redefining the standard of care for many years to come.


Vivosonic is ISO 13485 and CE 0120 certified. We market and sell our products globally, through distributors in over 35 countries worldwide.

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