Midwest Special Instruments

We service and sell Audiometers, Impedance Systems (Tympanometers), Otoacoustic Emissions (OAE), ABR, ENG/VNG, Sound Rooms, Hearing Aid Analyzers, and Real Ear Systems.  For our Occupational Health and Industrial customers, we service and sell Audiometers, Spirometers, Vision Screeners, Noise Dosimeters, Respirator Fit Testers and Breath Alcohol Testers.  We perform all of this for customers located in the states of Iowa, Minnesota, Nebraska, North Dakota and South Dakota. 

Welcome to MSI

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Online Shop

To purchase products, visit our online store.

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Products by Market

Audiology, Occupational Health, Pediatric, and more.

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Seminars & Events

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Mission Statement

At Midwest Special Instruments Corp, our customers and manufacturer relationships are developed for a lifetime. Our family of employees will make your staff's needs our priority. We promise to deliver high quality service and the product knowledge you need when purchasing equipment for your practice.

We service and sell Audiometers, Impedance Systems (Tympanometers), Otoacoustic Emissions (OAE), ABR, ENG/VNG, Sound Rooms, Hearing Aid Analyzers, Real Ear Systems and Breath Alcohol Testers to customers located in the States of Iowa, Minnesota, Nebraska, North Dakota, and South Dakota. Our Owner and President, Matt Williams has been working for Midwest Special Instruments and its predecessor Company since 1985. Our fully trained NASED certified service team has over 67 years of experience and our on-line store has all of the supplies and instrument parts that you will need to run your practice.

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Featured Products

MSI AudioStar Pro

GSI AudioStar Pro

The GSI AudioStar Pro™ is a versatile 2 channel clinical audiometer designed to perform efficient audiometric evaluations on every patient population. It may be used independently or with a computer for HIPAA compliant data storage and EMR/EHR compatibility. From the extra large display that reduces eye strain, to the ergonomic housing that maximizes hand and wrist comfort, to the light pipes around selected test buttons, this audiometer is designed for the busy audiologist.


AMTAS™, or Automated Method for Testing Auditory Sensitivity, was created by audiologists, for audiologists. This tool is used to boost efficiency through a reliable and accurate method to obtain a diagnostic hearing test. While patients are working through AMTAS, the clinician can complete other tasks, such as counseling or additional testing. Once the patient has completed AMTAS, the clinician can then go over the results with the patient. AMTAS is available in two versions, AMTAS Pro and AMTAS Flex.


Interacoustics vHIT - EyeSeeCam

Features: ~~The EyeSeeCam vHIT provides quick and objective measurements of the vestibular-ocular reflex (VOR). A simple tool to assess the performance of all 6 semicircular canals. The results allow the healthcare professional to efficiently diagnose the “dizzy” patient and evaluate if the dizziness is related to a vestibular disorder.

Service and Support

Midwest Special Instruments is proud to introduce you to the best Service Team in the country! Matt Warburton operates out of the Omaha office. Tom Fuerstenberg, Jason McKenna, Chris Oleson, Leo Boguslawski , Bryant Baker , Jim Malaske , Jacob Williams and Jake Gittus operate out of the Savage office.

These are the items that we Calibrate, Certify and/or Repair:

Years Established

We’ve Been in Business for Over 45 Years

Our fully trained NASED service team has over 67 years of experience and our on-line store has all of the supplies and instrument parts that you will need to run your practice.

Shop Products Online

Looking to purchase products? Shop at our online store.

Product News & Updates

Calorics and vHIT: Do We Really Need Both?

With the advent of video head impulse testing (vHIT), many researchers and clinicians alike have questioned whether or not we really need to include both tests in our assessment of vestibular function.

5 Important Features In VisualEyes™

“It can be challenging to narrow down the list of features of VisualEyes™, and the list may differ according to your practice need. Having said that, here is my top five.” – Michelle Petrak, Ph.D.

Get In Touch

Need help finding a product or run into an issue on our site? Contact us directly at (800) 328-6709 or send us a message!

Contact Info

Our Offices

Minneapolis: 12302 Princeton Avenue Savage, MN 55378
Omaha: 3738 S. 149th St., Suite 116, Omaha, NE 68144

Open Office Hours

M-F: 8am - 5pm
S-S: Closed


Contact Us

Minneapolis Offices:
(800) 328-6709 or (952) 808-0320
Omaha Offices:
(800) 899-7866 or (402) 572-7866

COVID-19 Update

We are monitoring the situation and development of the coronavirus outbreak closely. Currently this means that Midwest Special Instruments has setup procedures for operating our business and at the same time minimizing infection and spreading of the coronavirus. MSI’s guidance to team members is aligned with the guidance of local and national health authorities; in some cases, we are even more cautious. We constantly update our policy to reflect any changes in guidance from authorities.

Our first priority is everyone’s health. We are doing our best to ensure our service is maintained as much as possible given the circumstances. We are taking all possible actions to ensure reliable service and deliveries. As of now, there is no slowdown in order fulfilment or device repair and calibration services.

We greatly appreciate your loyalty to Midwest Special Instruments. We are keenly aware that this outbreak affects not only your business with MSI but your daily life and that of your family, customers and staff.  Please stay safe and know that our thoughts are with you during this difficult time.