MA 28 Portable Air & Bone Conduction Audiometer (No Software)


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SKU: 8510613 Categories: ,

This product is available with software. If you are interested, click here.

Capable of AC and BC measurements the MA 28 is your ideal companion for hearing testing – whether you are in the clinic or the field. Select multiple stimulus options by a touch of a button and benefit from the automated Hughson-Westlake test. Signal intensities range from -10 dBHL to 110 dBHL. To ensure accurate test results the MA 28 offers bone conduction with masking.

Take the MA 28 anywhere with confidence and style. Designed to be portable, the lightweight case with built-in handle and storage compartment protects the MA 28 and its accessories while on the go – an extra case is not needed.

A large LED color display and classical control knobs make adjusting frequency and hearing levels simple and comfortable – everything you do while you are testing feels fast and intuitive.

Maico Sessions PDF/Print

Software Demo (For Optional MA 27e)

Features and Benefits

  • Compact and portable with built-in handle
  • Integrated compartment for storing accessories
  • Customizable air & bone conduction test setup
  • 4.3′ LED color display for easy operation
  • AC test frequencies from 125 to 8000 Hz
  • BC test frequencies from 250 to 8000 Hz
  • Sinus and warble tone (pulsed and continuous)
  • Narrow band and white band masking noise
  • Automated Hughson-Westlake included
  • Optional hardwired printer avaialble.
  • Binaural DD45 headset is standard, optional DD65 headset available
    • The RadioEar DD65 v2 headset places the cushion around the outside of the external ear (pinna) compared to supranatural headphones that sit directly on the pinna. This option of circling the ear provides more comfort and easier placement.
    • The latest design of the DD65 v2 now incorporates a single cord. This feature allows for easier placement and removal of the headset. Testing a high volume of patients is now faster and more convenient
    • Due to the circumaural fit of the headphone, noise reduction (attenuation) of external environmental sounds is improved compared to the DD45 headset. This allows standard room noise to cause less interference during the testing process which leads to faster and more reliable results

Sound Attenuation Values for Headphones

Materials Included

  • MA 28 Portable Air & Bone Conduction Audiometer
  • (1) Headset Assembly DD45 or DD65 Headset Assembly
  • (1) Bone conduction headset B71
  • (1) Patient response switch
  • (1) Power supply
  • (1) Audiogram pad
  • (1) Operations manual
  • (1) Quick guide

Technical Specifications

  • Test Signals: Sinus and warble tones (pulsed and continuous)
  • Test Frequencies: 125, 250, 500, 750, 1000, 1500, 2000, 3000, 4000, 6000, 8000 Hz
  • Level Steps: 5 or 1 dB
  • Hearing Level Range
    • AC: -10 to 110 dBHL
    • BC: -10 to 80 dBHL
  • Masking Noise: Narrow band and white noise
  • Special Test: Automated Hughson-Westlake test
  • Dimensions: 37 cm x 25.5 cm x 15 cm / 14.6′ x 10′ x 5.9′
  • Weight: 1.9 kg / 4.2 lbs
  • Storage: Integrated Compartment
  • Display: 4.3′ LED color display
  • PC Connection: USB
  • Languages: English, German, Spanish, French, Italian
  • Power Supply: 100 VAC to 240 VAC, 50 Hz to 60 Hz

Warranty Information

  • 1-Year Warranty



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MA 28 Portable Air & Bone Conduction Audiometer (No Software)