e3 Diagnostics

Ready to purchase a screening audiometer, diagnostic audiometer or portable audiometer? e3 Diagnostics stands ready to meet your needs with responsive, unparalleled service. Our goal is to make it easier for you to do what you do best: care for patients using high-quality audiology equipment backed by superior service. 

We offer audiometers of all sizes and functionalities – from desktop audiometers that perform air, bone, and speech measurements to portable audiometers for on-the-go audiologists. Take a look at our wide variety of audiometers for sale and find the right one for you today!



A premier one-and-a-half channel audiometer, the MA 40 performs air and bone conduction screening, with frequency levels ranging from 125 Hz to 8000 Hz.

With built-in test signals, including pure tone, pulse tone, warble tone and narrow band noise, this Maico audiometer is one of the most versatile on the market!


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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.)

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Frequency Accuracy: +/- 3% maximum 

Test Frequencies: 125 Hz to 8000 Hz

Crosstalk: -100 dB minimum

Distortion: 0.5% typical, 3% maximum

On/Off Ratio: Greater than 90 dB

Rise/Fall Time: 35 msec (typical)

Frequency Mod. Rate: +/-5% frequency modulating rate at 5 Hz

Dimensions: 12.5” W x 6.25” H x 15.5” D (32cm W x 16cm H x 40cm D)

Weight: 16.5 lb./ 7.5 kg - Hard case: 10.5 kg - Soft case: 4.76 kg

Power Supply: 117/234 volts AC, 50/60 Hz, 25W

Features at a Glance

  • Portable air and bone conduction with Masking (125 – 8000 Hz)
  • AC adapter operated
  • Standard headphones included, insert phone optional
  • Large level and frequency dials
  • Continuous, pulse, warble tones
  • Sound room compatible
  • Hard or soft carrying case included
  • NOAH compatible