e3 Diagnostics

As the market leader in hearing aid testing equipment, e3 Diagnostics provides a robust selection of hearing aid test systems. Whether you need a device to perform real ear measurements (REM), hearing instrument tests (HIT), speech mapping, or all the above, we have a solution for your unique needs. Take REM measurements to confirm what your patients are hearing, assess telecoils, test directional microphones, and much more. Further, improve the overall patient management experience with our reliable hearing aid test kit options.

From manufacturers such as Interacoustics, Audioscan, and MedRx, our hearing aid testing equipment is versatile and easy to learn. You'll always feel secure that your readings are accurate and precise. Trust us to offer not only the best hearing loop testing kit technology, but also superior customer service before and after the sale. Request a quote today, and ensure you have the hearing aid test kits you need to operate your clinic or dispensary year-round.

Callisto VSP

Interacoustics Callisto / REM440

Redefining portability by bringing audiometry, REM, and speech mapping to the patient, the Interacoustics Callisto runs on upgradable software, saving you money in hardware costs. The REM440 software module allows the Callisto to run reliable REM tests.

Additionally, and intuitive user interface combines testing and counseling features to allow you to configure the system to your unique needs.



Callisto Supplies

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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.)


  • Stimuli: Warble Tone, Pure Tone, Random noise, Pseudo random noise, Band limited white noise, Chirp, ICRA, Real Speech, any other sound file (automatic calibration available).
  • Frequency range: 100Hz – 10kHz
  • Frequency accuracy: Less than ± 1 %
  • Distortion: Less than 2%
  • Intensity range: 40 – 90 dB
  • Intensity accuracy: Less than ± 1.5 %
  • Measurement Intensity Range: Probe microphone 40-140 dB SPL ± 2 dB.
  • Frequency Resolution: 1/3, 1/6, 1/12, 1/24 octave or 1024 point FFT.
  • Probe microphone: Intensity: 40 – 140 dB
  • Reference microphone: Intensity: 40 – 100 dB
  • Intensity Accuracy: Less than ± 1.5 dB
  • Cross talk Cross talk in the probe and probe tube will alter the obtained results with less than 1 dB at all frequencies.