---
product_id: 11364091
title: "Serene Business Phone Amplifier (UA50)"
brand: "serene innovations"
price: "€ 190.68"
currency: EUR
in_stock: true
reviews_count: 8
category: "Serene Innovations"
url: https://www.desertcart.gr/products/11364091-serene-business-phone-amplifier-ua50
store_origin: GR
region: Greece
---

# Digital Sound Processing clarity 45dB voice amplification Universal RJ9 headset compatibility Serene Business Phone Amplifier (UA50)

**Brand:** serene innovations
**Price:** € 190.68
**Availability:** ✅ In Stock

## Summary

> 🔊 Elevate your calls—hear every word, miss nothing.

## Quick Answers

- **What is this?** Serene Business Phone Amplifier (UA50) by serene innovations
- **How much does it cost?** € 190.68 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/11364091-serene-business-phone-amplifier-ua50)

## Best For

- serene innovations enthusiasts

## Why This Product

- Trusted serene innovations brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Tailored Audio Boost:** Digital Tone Enhancement lets you customize speech frequencies to catch every word.
- • **Universal Compatibility:** Seamlessly connects with any RJ9 headset and virtually all business phones via patented tech.
- • **Noise-Free Communication:** Digital Sound Processing eradicates distortion, echo, and static for pristine audio.
- • **Crystal-Clear Conversations:** Amplifies incoming voices up to 45dB for unmatched clarity in every call.
- • **Upgrade Your Call Experience:** Transform routine calls into professional-grade conversations that set you apart.

## Overview

The Serene Business Phone Amplifier (UA50) boosts incoming voice volume by up to 45dB, compatible with any RJ9 headset and most business phones. Its patented technology and advanced Digital Sound Processing eliminate distortion and static, while Digital Tone Enhancement customizes speech frequencies for superior clarity.

## Description

- Amplifies incoming voices up to 170 times (45+ dB) so you hear every word with unmatched clarity- Selectable digital tone enhancement allows you to boost and enrich the speech fequencies you can't hear well making difficult to hear words intelligible again- Automatic gain control optimizes sound level for superior listening comfort- Easy headset/handset selection button for extra convenience- Latest digital sound processing technology eliminates virtually all distortion echo effects and unwanted static commonly found in other ordinary amplifiers- Works with virtually all business telephones and headsets; it connects between phone's handset/headset and base- AC adapter included battery (9V) optional

Review: Reliable amplification - I have a moderate hearing loss. This unit makes it possible for me to continue to work with the landline phone that I use with a headset for taking notes over the phone. Usually I do not need to turn the dial up more than 1/3 of the way, but the volume of incoming calls varies a lot with the caller, so I appreciate the control. Setup was easy. The lid to the battery compartment could be more secure. I have knocked it off several times, and eventually put some tape over the lid to hold it in place. The important feature is the clean amplification, so I give it 5 points.
Review: I am satisfied - Works as described.

## Features

- Amplifies incoming voices up to 45dB on your handset or headset.
- Can be used with any headset with an RJ9 plug.
- Patented technology enables the amplifier to work with virtually all business telephones.
- Digital Sound Processing technology eliminates virtually all distortion, echo effects and unwanted static.
- Digital Tone Enhancement allows you to boost and enrich the speech frequencies you can't hear well.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002OKYW8U |
| Audio Sensitivity | 45 Decibels |
| Battery Cell Composition | Alkaline |
| Battery Description | 9V Alkaline Battery (not included) |
| Best Sellers Rank | #952 in Telephone Accessories |
| Brand | Serene Innovations |
| Brand Name | Serene Innovations |
| Color | Neutral |
| Compatible Devices | Virtually all business telephones and headsets |
| Control Type | Button Control |
| Customer Reviews | 3.9 out of 5 stars 28 Reviews |
| Fit Type | body-worn |
| Headphone Folding Features | Body-worn |
| Includes Rechargeable Battery | No |
| Item Weight | 0.01 Ounces |
| Manufacturer | Serene Innovations |
| Material | Plastic |
| Model Name | UA-50 |
| Model Number | UA-50 |
| Noise Control | None |
| Part Number | UA50 |
| Power Source | Battery Powered |
| Unit Count | 1.00 Count |

## Product Details

- **Brand:** Serene Innovations
- **Color:** Neutral
- **Material:** Plastic
- **Model Name:** UA-50
- **Power Source:** Battery Powered

## Images

![Serene Business Phone Amplifier (UA50) - Image 1](https://m.media-amazon.com/images/I/61-qaX51xUL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable amplification
*by J***) on November 1, 2025*

I have a moderate hearing loss. This unit makes it possible for me to continue to work with the landline phone that I use with a headset for taking notes over the phone. Usually I do not need to turn the dial up more than 1/3 of the way, but the volume of incoming calls varies a lot with the caller, so I appreciate the control. Setup was easy. The lid to the battery compartment could be more secure. I have knocked it off several times, and eventually put some tape over the lid to hold it in place. The important feature is the clean amplification, so I give it 5 points.

### ⭐⭐⭐⭐⭐ I am satisfied
*by D***T on November 5, 2025*

Works as described.

### ⭐⭐⭐⭐⭐ The "Cadillac" of telephone amplifiers
*by J***R on March 27, 2014*

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.

## Frequently Bought Together

- Serene Business Phone Amplifier (UA50)
- UL Listed 9V AC Power Adapter for Arduino UNO, Power Supply Cord for Crosley Cruiser CR8005A, Schwinn Bike A10 A20 A40 220 430 Elliptical Trainer - Center Positive 5.5x2.1mm Plug (6.6ft)
- Serene Portable Phone Amplifier (UA30)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-05-31*