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Cable Type
Telephone / Data Cable
Adjustable On Levels
Battery Operated
Status Indicators
Universal Phone Compatibility
Ease of Installation
Beginner (Installs < 10 minutes)
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Telephone Hearing Aid Amplifies Incoming Sound by 40 dB
Clarity Portable Telephone Handset Amplifier
Clarity® Portable Telephone Handset Amplifier
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Sound Compariosn Wiring Diagram
Clarity Portable Telephone Handset Amplifier
Item# 52250
Price: Normally $34.99 
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  • In line amplifier with adjustable amplification up to 40 dB
  • Adjustable volume and tone control
  • Compact, portable design
  • Compatible with most home and office telephones

Essential Info

Millions of people experience high frequency hearing loss, making it extremely difficult for them to stay in contact with family and friends over the phone. The Clarity Portable Telephone Handset Amplifier is designed to help anyone with hearing loss by connecting directly to a telephone handset, making calls louder and easier to understand. This product is the most powerful in-line telephone amplifier available, boosting call volume by up to 100 times (+40 dB) normal listening levels. The patented Clarity® Power technology amplifies and shapes high frequencies to enhance communications over phone lines. An adjustable slide volume control and slide tone selector let the user fine tune how loud they want the phone and to maximize the clarity by creating a distinction between similar sounding words. A boost button adds more amplification and eliminates background noise and feedback by muting the microphone in the handset. The device is compact and portable, so you can take it with you everywhere. it connects easily between a handset and phone base and is battery powered, there is no complex wiring involved. Additionally, the device is voice activated which reduces power consumption and extends the life of the battery; an LED indicator light will identify when the battery is low. The Clarity Portable Telephone Handset Amplifier is the ideal solution to improve hearing over the phone for people with mild to sever hearing loss. This product requires the use of one 9-Volt battery for operation, included.

Important Note: This product is designed to work with almost all analog and digital corded phones; however, it cannot be used with telephones with dialing pads in the handset.


What's Included

  • Clarity Telephone Handset Amplifier
  • 9-Volt Battery
  • Telephone cord
  • Owner's Manual
  • Specifications


    Manufacturer Product No.:HA40
    Power Supply:One 9-Volt alkaline battery, included
    Sound Amplification:Up to 40dB
    Tone Range:600-2400Hz
    Compatibility:Analog and digital corded phone; cannot be used with telephones with dialing pads in the handset
    LED Indicator:Red (low battery)
    Warranty:One year, limited

    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.


    Sound Compariosn  Wiring Diagram     
    Sound Compariosn  Wiring Diagram     


    10 Ratings
    5 star: 50%  (5)
    4 star: 30%  (3)
    3 star: 0%  (0)
    2 star: 0%  (0)
    1 star: 20%  (2)
    Average Customer Rating
    (10 customer ratings)
    Share your thoughts with other customers
    DALE -- wilmette, IL   2/13/2012
    Quick and easy to install, simple to use, works fine.
    BRENDA -- west frankfort, IL   11/4/2010
    This device makes all the difference when trying to hear patients who call in a noisy and busy medical office. Thank you.....
    MOHAMMED -- dubai, XX   6/12/2010
    Excellent product. Produces very high volumes.
    FRED -- terrell, TX   1/8/2010
    Product is unusable. Noisy background, echo, tinny sound.
    MICHAEL J. -- orlando, FL   11/6/2009
    Outstanding Product!
    SUSAN -- annandale, NJ   10/16/2009
    Works fine, but difficult to mount on a wall by a wall phone. The rubber feet came unglued from the unit, while my velcro stayed attached to the wall and to the feet. I reattached it without the feet and that seems to be holding. The short wire from phone to amplifier didn't leave many installation options.
    ELWOOD -- royal oak, MI   10/10/2009
    I bought this for my friend who is 82. He loves it and has been using it every day. The sound is wonderful and clear. It is so nice to be able to talk to him without yelling on the phone.
    CATHERIE -- coffeyville, KS   8/15/2009
    my mom is hard of hearing even with two hearing aids. She can hear over the phone very well now. Made her life much better.


    9 Volt Batteries       
    9 Volt Batteries       

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