Our approach

For over 65 years, Grason-Stadler (GSI) has been "Setting The Clinical Standard" in Audiometry, Tympanometry and hearing healthcare diagnostics.

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A tradition of excellence

In 1949, Rufus Grason and Steven Stadler co-founded Grason-Stadler (GSI). The company originally manufactured electronic medical instruments for behavioral and pharmaceutical research but in 1952 introduced its first clinical audiometer.

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Latest News

  • news---tympstar-pro

    Now with even MORE Star Power

    Grason-Stadler is excited to announce new updates to its clinical middle-ear analyzer, the GSI TympStar Pro™. Providing precise, reliable and efficient clinical middle-ear testing, TympStar Pro continues to be enhanced with new tests and customer requested options to meet the requirements of audiologists around the world.  


  • news---corti

    Seamless OAE Data Transfer

    Grason-Stadler is pleased to announce that the GSI Corti™ OAE diagnostic and screening instrument is now compatible with GSI Suite, GSI’s audiometric data management software. This integration provides flexibility in comprehensive reporting by offering the option to combine audiometry, middle ear evaluations and OAE patient data into a single report.


  • news-pello

    Meet the new Pello

    Grason-Stadler, a leader in clinical audiometric systems, is pleased to announce the introduction of the GSI Pello™, a new mid-level audiometer. The GSI Pello is a perfect solution when precise and efficient diagnostic audiometry is required.


Upcoming Events

  • AHAA


    February 14-17th, 2018
    Las Vegas, NV
    Booth TBD

    The premier business-focused event for the industry. Hear from experts, learn from business visionaries, and exchange solutions with your peers. No other industry conference offers attendees a better outlook to move their practices ahead of the competition.

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  • ehdilogo2


    March 18-20th, 2018
    Denver, CO
    Booth TBD

    The goal of the annual EHDI Meeting is to enhance the implementation of comprehensive state-based Early Hearing Detection and Intervention (EHDI) programs. In its 17th year, the EHDI meeting has built a strong reputation for bringing together a wide variety of attendees that work and interact with EHDI programs.

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  • jdvac-png


    March 26-28th, 2018
    Atlanta, GA
    Booth TBD

    This meeting provides an opportunity for networking and collaboration between the Audiologists treating our active duty service men and women and those working with our nation's veterans. The conference aims to offer sessions that are geared towards these particular cohorts and to address hearing healthcare issues that are central to what VA and DOD Audiologists deal with on a day to day basis; such as tinnitus treatment, TBI/polytrauma, hearing conservation, and compensation/pension evaluation.

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Contact Us

Grason-Stadler Inc.

Corporate Headquarters
10395 West 70th St.
Eden Prairie, MN 55344

General Inquires:
+1 800-700-2282
+1 952-278-4401

Technical Support:
+1 877-722-4490
+1 952-278-4456

Live Remote Assist

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