GSI, one of Demant’s Diagnostic brands, has celebrated its 75th anniversary in 2024. Since its founding in 1949, GSI has been dedicated to advancing audiometric equipment as part of its commitment to empowering clinicians and improving patient care. This journey has been intertwined with Demant’s purpose to create life-changing differences through hearing health. 
 
This year also commemorates GSI’s 15th anniversary as part of Demant Group. Acquired in 2009, GSI has played a relevant role in establishing Demant as the world’s largest supplier of diagnostic equipment. 
 
From humble beginnings to global impact 
GSI was founded in 1949 by Rufus Grason and Steven Stadler, initially focusing on behavioural research instruments for university psychology departments and the pharmaceutical industry. In 1952, GSI launched its first commercially available audiometer, marking the beginning of its journey in manufacturing electronic medical instruments for hearing research and clinical measurement.
 
Since then, GSI has been at the forefront of audiometric innovation, transforming the field of audiometric equipment and continually improving to support clinicians and enhance patient care. Today, GSI’s technologies, designed to minimize downtime, are used worldwide, ensuring clinicians have reliable devices to support their patients.