Medline MDSHEARAMP User manual

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Behind the ear
Hearing Amplifier
Instruction manual
MDSHEARAMP

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Function:
This hearing amplifier is designed to
increase the level of sound.
Max Sound Output ≤ 135 + 3 dB
Avg. Sound Output 119 ± 4 dB
Max Sound Gain 40 ± 5 dB
Avg. Sound Gain 35 ± 5 dB
Input Noise ≤ 35 dB
Response Limit 300 ~ 3200 Hz
Total Harmonic Wave Distortion ≤ 15%
Current ≤ 10 mA
B
E
F
C
A
D
G

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Device Diagram:
Diagram
Label
Device
Component
Description
A
Sound
Collection
Hole
Sound enters in the sound
collection hole.
B Volume
Adjuster
Adjust the volume.
1 – Minimum volume
4 – Maximum volume
C On/Off
Switch
“N” – “Power On”
“O” – “Power Off”
D Battery
Cartridge “+” – positive electrode of battery “-“ – negative electrode of battery
E Earphone Sound leaves the device.
F Earplug Covers the earphone
forcomfortability.
G Ear hook Part of the device that
fits over the ear.

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Instructions for Use:
1 Open battery compartment.
2 Line up the positive (+) side
of the battery with the
positive indicator on the device.
3 Remove the positive indicator sticker on the battery,
and place battery inside of battery tray.
4 Close the battery compartment.
5 Before first use, turn the power to off, “O” on the device,
to keep the device from being too loud.
6 Place an earplug on the earphone. There are four
different size earplugs to choose from.
7 Place the ear hook over the ear and plug earplug
in tightly.
8 Turn on the power, “N” on the device.
9 Adjust the volume, between “1-4”, to receive
a comfortable sound level. “1” is the minimum and
“4” is the maximum sound amplification level.

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10 If you hear a whistling sound, make sure that you
have pushed in the earplug securely or change to
the larger size earplug.
Maintenance:
• To clean, use a dry cloth to wipe
off the outer parts of the unit.
• Use the black brush to clean the
earplugs.
• Periodically, check the sound inlet
and earplug hole to make sure they
are not blocked by foreign objects

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Troubleshooting:
No Sound
Check that the device is on.
The “On/Off” switch is at “N”. See page 3.
Check that the volume is turned up to
the appropriate level by moving the
volume adjuster switch. See page 3.
Battery is installed with the “+” indicator of
the battery towards the “+”indicator label on
the device. See page 3.
Change the battery. See page 4.
Verify that the lead wire in the ear hook
connects to the device and the earphone.
See page 3.
Weak Sound
Change the battery. See page 4.
Verify that the earphone is not damaged.
See page 3.

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Warnings:
•DO NOT USE
• For users with tympanitis or
ear pyogenesis.
• At a high volume for an extended
period or ear injury may occur.
• If you feel discomfort due to sound.
• Keep the product away from children
and infants.
• Avoid physical shock or dropping the
amplifier.
• Do not store or use in areas of high
humidity or temperatures.
• If device is stored for a long period,
remove the battery to prevent damage
from possible battery leakage.
• Dispose of the battery properly, not in
common trash.

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www.Medline.com
©2021 Medline Industries, LP
Manufactured in China for Medline Industries, LP,
Three Lakes Drive, Northfield, IL 60093 USA.
1-800-MEDLINE V4 RH22HJI
NOTE: Hearing amplifier is NOT a hear-
ing aid. Hearing amplifier should NOT
be used for individuals with hearing
impairments.