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MA 27, MA 25 & MA 1
Air Conduction Audiometer Series
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MA 27
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, ngertip 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 ngertip operation of frequency and hearing level controls
Easy to Transport
The rigid, yet lightweight case with built-in handle and storage com-
partment not only protects the audiometer, but also allows you to
pick-up-and-go in a hurry. Ample storage holds headphones and other
accessories.
TECHNICAL DATA
Frequency Accuracy
Rise/Fall Time
Distortion
Crosstalk
On/Off Ratio
Frequency Modulation
Frequency Range
Hearing Level Range
Dimensions
Weight
Power Supply
Stimulus
STANDARD ACCESSORIES
DD45 Headset, with RE-7 Headset
Audiogram Pad
Operators Manual
AC Adapter
+/- 1% maximum
35 msec
0.5% typical, 2.5 % maximum
-100 db HL minimum
Greater than 80 dB
+/-5% frequency modulating rate at 5 Hz
125 Hz to 8000 Hz
-10 to 100 dBHL in 1 and 5 dB steps
10 in x 6 in x 14.5 in
5.28 lbs (with all accessories)
External, 5 VDC, MA 100-240 VAC
Continuous, pulse, warble
OPTIONAL ACCESSORIES
Audiocup Headset
Patch Cord
MA 27e
Patient Response Switch
APPLICABLE CPT CODE (S):
92551: Screening, pure tone
92552: Threshold, air
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MA 25
Accurate, Dependable Engineering
Because it’s a portable, the MA 25 is engineered to be tough
and reliable. Take the MA 25 anywhere with confidence.
User-friendly knobs make adjusting frequency and hearing
levels easy. Simple push-button operation for right/left,
pulse tone and warble.
• Air Conduction
• Runs on 3 AA batteries or an AC adapter (included)
• Continuous, pulse, warble tones
• Exceptionally lightweight, only 3.5 lbs
• Carrying case included
Sleek, Small Design
The super-lightweight MA 25 weighs in at only 3.5 lbs. Small
enough to hold in the palm of your hand. Tucked into its
carrying case (included), the MA 25 is one of our smallest,
lightest portables.
TECHNICAL DATA
Rise/Fall Time
Distortion
Crosstalk
On/Off Ratio
Frequency Modulation
Frequency Range
Hearing Level Range
Dimensions
Weight
Power Supply
Stimulus
~35 msec
2.5 maximum
-100 dB minimum
Greater than 80 dB
+/-5% frequency modulating rate at 5 Hz
125 Hz to 8000 Hz
-10 to 100 dBHL, in 1 and 5 dB steps
9 in x 2.25 in x 7.5 in
3.5 lb (with accessories & carrying case)
3 AA batteries, external power supply;
5 VDC MA, 100 - 240 VAC
Continuous, pulse, warble
APPLICABLE CPT CODE (S):
92551: Screening, pure tone
92552: Threshold, air
STANDARD ACCESSORIES
Audiogram Pad
Operators Manual
Carrying Case
DD45 Headset, with RE-7 Headset
AC Adapter
OPTIONAL ACCESSORIES
Audiocup Headset
Patch Cord
MA 25e 5601
Extended functionality available on both
MA 25e and MA 27e
• Automated Hughson-Westlake
• Results recalled from internal memory
• PC compatible w / SNAP software
• Includes patient response switch & USB cable following test
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MA 1
The super-lightweight MA 1 weighs in at only 1 pound. Small
enough to hold in the palm of your hand! Tucked into its
carrying case (included), the MA 1 is our smallest, lightest
portable audiometer.
• Air conduction screener
• Easy one hand push button operation
• Fits in the palm of your hand
• Exceptionally lightweight, only 1 pound
• Runs on 2 AA alkaline batteries
TECHNICAL DATA
Screening Audiometer
Test Frequencies
Rise/Fall Time
Attenuator Range
Stimulus
Distortion
Dimensions
Weight
Power Supply
STANDARD ACCESSORIES
Audiogram pad
2 AA Alkaline batteries
Carrying Case
DD45 Headset, with RE-7 Headset
Device Stand
Operators Manual
500, 1000, 2000, 4000 Hz
35 msec typical
15 to 50 dbHL 5 dB steps
Continuous
0.5% typical, 3% maximum
2.5 in x 6 in x 7/8 in
2.1 lbs (with accessories and carrying case)
2 AA Alkaline
OPTIONAL ACCESSORIES
TDH 39 Headset
Audiocup Headset
APPLICABLE CPT CODE
92551: Screening, pure tone
MAICO Diagnostics
10393 West 70th Street
Eden Prairie, MN 55344, USA
Tel: (888) 941-4201
Fax: (952) 903-4100
info@maico-diagnostics.com
www.maico-diagnostics.com/us
853811 Rev C 11/2020
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