e3 Diagnostics

Looking for a hearing screening and diagnostic instrument to perform otoacoustic emissions tests in patients of all ages? We have plenty! Browse our selection of fast, intuitive, and reliable OAE machines. With over 20 devices from seven manufacturers, you’re bound to find an OAE audiology machine that suits your testing needs.

A reliable OAE machine is vital to any hearing professional's toolbox. That's why we want to make sure you are equipped with the right otoacoustic emission device for your practice. From basic otoacoustic emissions machines to devices that simultaneously conduct DPOAE and TEOAE screenings, we have the otoacoustic emissions test technology to determine the function of your patients' inner ears. With 30 offices spread across the U.S., e3 Diagnostics can often provide same-day service to support your OAE hearing tests.



Handheld and rechargeable, the MAICO ERO•SCAN is an OAE hearing screener that produces fast, accurate, and reliable measurements on patients of all ages.

Available in two versions (Screener or Diagnostic), it provides automated, easy-to-read results in a PASS/REFER format in less than 30 seconds per ear.



EroScan Supplies


Ero Scan OAE Quicktips

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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.)


Measurement Type:

Distortion Product Otoacoustic Emissions (DPOAE)
Transient Evoked Otoacoustic Emissions (TEOAE)

Frequency Range:

Screener version:

DPOAE: 2.0 kHz to 5.0 kHz
TEOAE: 1.5 kHz to 4.0 kHz

Diagnostic version:

DPOAE: 1.5 kHz to 12.0 kHz
TEOAE: 0.7 kHz to 4.0 kHz

Stimulus Intensity Range:
DPOAE: 40 dB SPL to 70 dB SPL
TEOAE: 83 dB SPL peak equivalent (±3 dB)

Microphone System Noise:

-20 dB SPL @ 2 kHz (1 Hz bandwidth)/
-13 dB SPL @ 1 kHz (1 Hz bandwidth)

Length and Weight (Probe):

1 oz

Dimensions and Weight (Unit):

2.58” W x 1.23” D x 5.78” H
6.4 oz




  • Performing screening and diagnostic testing with TE and / or DPOAE
  • Fast automatic test with Pass / Refer and graphical test result display
  • Sharp, colored Organic LED Display
  • Direct evaluation via value and bar diagram Up to 12 frequencies displayed within the device, DP up to 12 kHz
  • 5 DP / 2 TE protocols with user customizable parameters (diagnostic version)
  • High noise immunity for operation in normal clinical environment
  • Lightweight, small earprobe
  • Environmentally friendly due to long life, rechargeable battery
  • Bluetooth® communication to optional printer and PC
  • Evaluation of results in PC