GSI has multiple solutions for tympanometry testing needs, from fully clinical instruments with a comprehensive test battery, to portable screening tympanometers that can provide efficient testing on the go. Download the tympanometer comparison chart below to see the full breakdown of the features of each device to help you choose the right tympanometer for your clinic!

TympStar Pro Clinical Tympanometer from Grason-Stadler


The GSI TympStar Pro™ offers comprehensive middle ear testing that supports the needs of hearing healthcare professionals. Protocols may be configured to optimize efficiency and workflow. Reliability, versatility, and confidence in testing are the hallmarks of the TympStar Pro. The TympStar Pro continues to be the gold standard for clinical immittance.



GSI 39

GSI 39

The GSI 39™ Auto Tymp provides a flexible screening product for tympanometry, acoustic reflex measurements, and audiometry to meet testing needs today and in the future. The product is available in five different versions to meet the unique demands of each facility. All five versions are fast, versatile, and easy to use. It is possible to add additional modalities such as audiometry, contralateral reflexes, or 1000 Hz probe tone as the facility testing requirements expand.



Allegro Handheld Screening Tympanometer from Grason-Stadler


The GSI Allegro™ is a handheld screening device ready for any testing environment that requires tympanometry and ipsilateral reflexes. The Allegro offers a four button navigation that allows for quick and reliable testing. Automatic measurements of the middle ear status are completed in seconds using the device’s configurable test settings. For acoustic reflex testing, select one or more frequencies to be tested after tympanometry. Available frequencies include 500, 1000, 2000, and 4000 Hz.