The MA 27 is a state-of-the-art air conduction audiometer that ensures accurate and fast test results.

This Maico audiometer allows you to seamlessly switch between tone, pulse, and warble with the push a button, with frequency levels ranging from 250 Hz to 8000 Hz, and signal intensities spanning -15 dB HL to 90 dB HL.



MA27 Supplies


MA 27 Audiometry Quicktips

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Frequency Accuracy: +/- 1% maximum 

Rise/Fall Time: 35 msec

Distortion: 0.5% typical, 2.5% maximum

Crosstalk: -100 dB minimum

On/Off Ratio: Greater than 80 dB

Frequency Modulation: +/-5% frequency modulating rate at 5 Hz

Frequency Range: 125 Hz to 8000 Hz

Hearing Level Range: -10 to 100 dBHL, in 1 and 5 dB steps

Dimensions: 10“ W x 6“ H x 14.5“ D - 25.5 cm W x 15 cm H x 37 cm D

Weight: 5.28 lbs/ 2.4 kg ( with all accessories)

Power Supply: External, 5 VDC, MA 100-240 VAC

Stimulus: Continuous, pulse, warble

Carefully Engineered for Accuracy 

State-of-the-art audiometric circuitry ensures accurate, fast test results. Switch between tone, pulse or warble by simply pressing a button. Large, fingertip control knobs provide access to a full range of frequencies and hearing levels.

  • All-in-one sturdy case with built-in handle and storage
  • Continuous, pulse, warble tones
  • Easy fingertip operation of frequency and hearing level controls