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  • Serene Innovations UA-50 Business Phone Amplifier
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Serene Innovations UA-50 Business Phone Amplifier


Price: $78.84 & FREE Shipping. Details
Only 4 left in stock.
  • Works with all business telephones and headsets
  • Personalized tone settings
  • Easy headset/handset selection button for extra convenience
  • Amplifies incoming audio up to 170 times (45+dB)
  • Digital Sound Processing eliminates distortion, echo effects and unwanted static
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Frequently Bought Together

Serene Innovations UA-50 Business Phone Amplifier + Serene Power Adapter (For UA-45 & UA-50 Phone Amplifiers) (UA-ADAPT)
Price for both: $94.50

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Product Specifications

Brand NameSerene Innovations
Special FeaturesCan be used with any headset with an RJ9 plug, Automatic Volume Control

Technical Details

  • Can be used with any headset with an RJ9 plug
  • Automatic Volume Control

Product Details

  • Item Weight: 1 pounds
  • Shipping Weight: 12 ounces (View shipping rates and policies)
  • ASIN: B002OKYW8U
  • Item model number: UA-50
  • Average Customer Review: 3.5 out of 5 stars  See all reviews (4 customer reviews)
  • Date first available at Amazon.com: May 27, 2004

Product Description

*PLEASE NOTE THIS PRODUCT ONLY AMPLIFIES HANDSETS AND HEADSETS. IT WILL NOT AMPLIFY THE SPEAKER PHONE FUNCTION*

The Serene Innovations UA50 business telephone amplifier can be used to amplify any business phone. Connect the Serene UA50 telephone amplifier to your business phone for loud and clear calls that are amplified up to 170 times louder on your handset or headset. The Serene UA50 amplifier utilizes High Definition Sound (HDS) Technology which eliminates virtually all distortion, echo effects, and unwanted static.

Customer Reviews

3.5 out of 5 stars
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Most Helpful Customer Reviews

6 of 6 people found the following review helpful By dugsbunny on January 6, 2014
First, for background info, I am hearing-impaired since birth. I've been a mainstream person all of my life, including working in office jobs and doing financial consulting. My hearing worsened with drug interaction problems with antibiotics and with over-the-counter pain killers to the point I'm very dependent on technology. I've used various types of Walker and Clarity telephone handset amplifiers for decades. When I ordered the Serene Innovations UA-50 amplifier, I was switching my home phone service from VOIP to landline, and my existing Plantronics M-22 Vista amplifier did not work well with my new landline phone. Note that my new phone, a Clarity XL-45, is a one-line home phone. When I connected the UA-50 device to the new phone (just plugged it inline between the phone base and the handset) and made some calls, I was surprised at the strength and clarity of the amplified sound. The device worked with only one adjustment--the Tone adjustment. I'm used to various types of electronic static or distortion noises coming from an amplifier when you crank it up; that is not the case with the UA-50. I've made various calls to friends here and there, and the voice quality is excellent. I am about 50% deaf--maybe more--and I have my volume set at about 50% of the available range. I would expect the UA-50 to have problems if it is used outside its intended application; i.e., try to use it on a VOIP phone. The UA-50 device has 4 tone settings and 7 compatibility settings; so it should work with a wide range of landline phones, business or home phone. If you use it on a landline phone, it's definitely a keeper.

UPDATE Jan 9, 2014 I've had some experience now calling 800 phone numbers for credit card, Paypal, some others.
Read more ›
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4 of 4 people found the following review helpful By Busy Executive TOP 500 REVIEWERVINE VOICE on May 10, 2012
Verified Purchase
I have an unusual situation where my office phone is connected to an audio conferencing system through the headset jack. Everything works great, except that the sound through the speakers is a bit too soft, so I hoped an amplifier would help. While this unit helped somewhat, it also introduced a lot of buzz and hum, and I found it didn't work that well with the Cisco VoIP phones in my office, even when used as a conventional headset amplifier.

Seems okay from a construction quality perspective and it was easy to setup, but I imagine your results will vary depending on how you intend to use it and the type of phone you connect it to.
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2 of 2 people found the following review helpful By Jimster on March 27, 2014
Verified Purchase
This amp is amazing! Easy to hook up with in seconds and has tons of power for volume and tone. Buy the Serene Innovations UA-50 (IMHO - The Cadillac of amplifiers) and you will never have another problem hearing on the phone no matter what level of hearing loss. I went to work and installed the optional 9 volt (also comes with power cord) and installed it to my office phone all in about 40 seconds. I first adjusted the phone "compatibility" switch on the right side of the unit. Second, I adjust the "tone". For me, I have high frequency / high pitch hearing loss. I click the "tone" switch up two notches and all my phone calls are crystal clear. Lastly, I adjusted the volume knob to the first white block on the unit - simple as that. There is a "boost" button but with the amount of "horsepower" even before engaging this feature, I can say with certainty I will never use it. There is also a "headphone" button next to the "boost" button so you can utilize headphones. The reason for me using the optional 9 volt is so I can move the device to another office phone in a jiffy. Definitely a five star product and highly recommend to anyone with hearing loss. I have no regrets for spending this type of money for a phone amplifier.
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Verified Purchase
It did not work at all, no amplification beyond what my phone headset originally provided. I wrote to Serene Innovations asking what the difference was between the UA-45 and the UA-50 was prior to making the purchase. No answer!! So, I took the plunge and purchased the more expensive of the two. Tried everyway I could think of to get it functioning, no luck. Given the poor response of Serene Innovations, I sent it back to Amazon shortly after receiving it.
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