e3 Diagnostics

Audiologists use tympanometry measurements to test the middle ear's mobility when changes in air pressure occur. Recorded on a graph called a tympanogram, the results of tympanometry tests offer information about air pressure in the middle ear. Middle-ear tympanometry helps audiologists diagnose hearing loss and recommend a solution such as a hearing aid.

From handheld tympanometers to desktop models that offer a complete range of middle ear tests, e3 Diagnostics has the tools you need. Our tympanometry devices will allow you to diagnose patients' hearing issues so they can improve their quality of life quickly. You can feel confident with our high-quality tympanometry equipment from respected manufacturers including MAICO, Interacoustics, Amplivox, and Grason-Stadler.



Meeting the strict demands of today’s clinics and hearing specialists, the MAICO MI 44 performs a range of diagnostic tests in both manual and automatic modes.

In addition to an adjustable probe, this MAICO tympanometer features a detachable probe tip and an indicator light to signal a proper seal so the test can begin.


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We understand that you have a choice when it comes to choosing your equipment and are dedicated to providing you with the highest quality instrumentation available.Contact us now for your free, no obligation quote and discover why we are the preferred Authorized Distributor and Service Provider to the world’s leading manufacturers.  (Completing our online form does not sign you up for electronic advertising.)



Type: Class 2 acc. to ANSI S3.39


Test frequency: 226, 678, 800, 1000 Hz ± 2%

Test level: 85 dBSPL in 2 cm3 at 226 Hz; 85 dBSPL at 678, 800, 1000 Hz

Pressure range: Automatic: +200 to -400 daPa

Manual: +300 to -600 daPa

Volume range: 0.1 to 6.0 ml

Accuracy: ± 10 % or ± 10 daPa

Test time: Less than 3 seconds

Compliance range: 0 to 3.0 ml



  • Graphical reflex display
  • Immediate pass/fail results
  • Reflex decay testing
  • Eustachian tube testing (intact and perforated)
  • Adjustable comfort probe
  • LCD screen display
  • Quiet, fast internal printer
  • Multiple test results stored for each patient
  • Setting and protocols can be customized
  • Selectable tympanometric pressure ranges
  • Selectable tympanometric pump speeds