---
product_id: 69920626
title: "Wireless Voice Amplifier"
brand: "responsebridge"
price: "₩280884"
currency: KRW
in_stock: true
category: "Response Bridge"
url: https://www.desertcart.kr/products/69920626-wireless-voice-amplifier
store_origin: KR
region: South Korea
---

# Bluetooth 5.3 wireless range 18W crystal-clear output 12 hrs battery life Wireless Voice Amplifier

**Brand:** responsebridge
**Price:** ₩280884
**Availability:** ✅ In Stock

## Summary

> 🎤 Own the room, wirelessly and effortlessly.

## Quick Answers

- **What is this?** Wireless Voice Amplifier by responsebridge
- **How much does it cost?** ₩280884 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/69920626-wireless-voice-amplifier)

## Best For

- responsebridge enthusiasts

## Why This Product

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

## Key Features

- • **Rugged & Ready:** Waterproof design with waist clip ensures you stay hands-free and worry-free in any environment.
- • **Powerful 18W Sound:** Cut through any crowd of 100-200 with crystal-clear amplification that commands attention.
- • **True Wireless Freedom:** Comfortable UHF headset mic with 35m range lets you move freely—no strings attached.
- • **All-Day Battery Endurance:** 4400mAh rechargeable battery delivers up to 12 hours of uninterrupted, reliable performance.
- • **Versatile Bluetooth 5.3 Streaming:** Seamlessly switch from voice to music with advanced Bluetooth 5.3 and multiple input options.

## Overview

The ResponseBridge Wireless Voice Amplifier RB-800U is a compact, 18W portable PA system featuring Bluetooth 5.3 connectivity, a wireless UHF headset microphone with 35m range, and a robust 4400mAh battery offering up to 12 hours of continuous use. Designed for teachers, tour guides, and presenters, it combines waterproof durability with versatile audio inputs including TF card, U disk, and Aux, all packed into a lightweight, waist-clip wearable design.

## Description

Buy Wireless Voice Amplifier with Bluetooth 5.3 | 18W Portable PA System with Waist Clip, Waterproof Rechargeable Megaphone Microphone and Speaker for Teachers, Tour Guide, Presentation: PA Systems - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- [Loud & Clear Sound Amplifier] This portable megaphone comes with 18W original clear and high output which perfect for a group with 100-200 People.
- [ Microphone Wireless , No Burden] You will get a wireless uhf comfortable headsest microphone(35m/100ft), no need to carry the amplifier just put it on table around you.
- [Long Batery Life] This portable microphone and speaker set comes with 4400mAh rechargeable battery, gives you up to 12 hrs wireless stable continuous amplification with a single charge; 18W waterproof speaker with microphone perfect for personal or commercial use large indoor and outdoor.
- [Bluetooth Speaker with Microphone] Not only a wireless voice amplifier but also a bt portable speaker, you can stream your favorite music from any type of Bluetooth-enabled mobile device, up to 33 feet away; Also support Aux input, TF Card, U Disk more in one.
- [What's Your Get]1 x Voice amplifer, 1 x Wireless microphone headset,1 x Charger, 1 x User Manual, 1 x 3.5mm audio cable, 1 x Adjustable waistband. What's more, We support 12-month worry-free warranty and friendly customer service within 24 hours. Enjoy your shopping！
- [Helpful Tips]: 1）For the best audio pickup, position the microphone about 3-5cm (1.2-2 inches) away from your mouth. 2）To prevent feedback, it's advisable not to place the microphone directly in front of the voice amplifier. 3）Adjust the volume to your preference using the convenient controls on both the microphone and amplifier. 4）If you encounter any connection issues, re-pairing the devices often resolves the problem in the majority of cases.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07D5YC4T8 |
| Antenna Location | Singing, Speaking |
| Audio Input | 'TF card', 'U disk', '3.5mm audio cable' |
| Best Sellers Rank | #34,146 in Musical Instruments ( See Top 100 in Musical Instruments ) #291 in PA Systems |
| Brand | ResponseBridge |
| Built-In Media | 1 x Voice amplifer, 1 x Wireless microphone headset,1 x Charger, 1 x User Manual, 1 x 3.5mm audio cable, 1 x Adjustable waistband |
| Color | Black-wireless |
| Compatible Devices | Amplifier, Headphone, Smartphone, Speaker |
| Connectivity Technology | Wireless |
| Connector Type | Aux |
| Customer Reviews | 4.1 4.1 out of 5 stars (467) |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS) |
| Frequency Response | 18 KHz |
| Item Dimensions | 4.7 x 3.8 x 1.8 inches |
| Item Weight | 13 Ounces |
| Manufacturer | SHIDU Digital |
| Mfr Part Number | RB-800U |
| Model Number | RB-800U |
| Mounting Type | Tabletop |
| Number of Channels | 1 |
| Output Wattage | 18 Watts |
| Power Source | Battery Powered |
| Unit Count | 1 Count |
| Warranty Description | 12 months warranty+lifetime technical guidance support+Email reply within 24 hours |

## Product Details

- **Brand:** ResponseBridge
- **Color:** Black-wireless
- **Compatible Devices:** Amplifier, Headphone, Smartphone, Speaker
- **Connectivity Technology:** Wireless
- **Item dimensions L x W x H:** 4.7 x 3.8 x 1.8 inches

## Images

![Wireless Voice Amplifier - Image 1](https://m.media-amazon.com/images/I/71Q9AdfbL4L.jpg)

## Questions & Answers

**Q: How to pair this wireless amplifier and microphone?**
A: Hi, normally we have already paired it for you before you receive the package, if you need to re-pair it, please follow the steps below and I will attach a video for your reference:

Step 1: Turn on the voice amplifier, short press""M" key to switch to UHF mode, long press“M" key for 3 seconds,amplifier comes a voice prompt "UHF is waiting for conn-ection".
Step 2:Turn on the wireless microphone and long press top key for 5 seconds, pairing is successful with a woiceprompt-UHF is connected".

please contact the Service Department (cindyresponse@outlook.com)if you have any problems with the products. 

We will give you a positive response within 24 hours.

**Q: can you connect to a separate speaker with music via bluetooth? I already use bluetooth for my music. Can I also connect two devices using bluetooth?**
A: Yes, you can connect to a separate speaker with music via bluetooth.

**Q: How do I get a second wireless mic headset for this to use when battery dies on first headset?**
A: The wireless set is unreliable and I was never able to find a replacement. So I went with wired and no more problems.

**Q: It says the battery can last up to 2-3 years. But I don’t see any opening on the devise to put new ones.  Can the batteries be replaced by the owner?**
A: It is a rechargable battery (in both the headset and the amplifier). If there is a limit on the life of the rechargable battery, I'm not aware of it and I've had no issues with my batteries after far more than 3 years.

## Frequently Bought Together

- Wireless Voice Amplifier with Bluetooth 5.3 | 18W Portable PA System with Waist Clip, Waterproof Rechargeable Megaphone Microphone and Speaker for Teachers, Tour Guide, Presentation
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**Shop now:** [https://www.desertcart.kr/products/69920626-wireless-voice-amplifier](https://www.desertcart.kr/products/69920626-wireless-voice-amplifier)

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-07-11*