---
product_id: 548353932
title: "Bietrun Voice Amplifier for Teachers with Bluetooth, Portable Rechargeable Wireless Voice Amplifier with Headset Microphone Portable Megaphone Speaker for Teaching, Coach, Instructor, Tour Guide"
brand: "bietrun"
price: "S$86"
currency: SGD
in_stock: true
reviews_count: 5
category: "Bietrun"
url: https://www.desertcart.sg/products/548353932-bietrun-voice-amplifier-for-teachers-with-bluetooth-portable-rechargeable-wireless
store_origin: SG
region: Singapore
---

# Dual wireless & wired mics included 20W UHF crystal-clear sound 12h battery life, 3h fast charge Bietrun Voice Amplifier for Teachers with Bluetooth, Portable Rechargeable Wireless Voice Amplifier with Headset Microphone Portable Megaphone Speaker for Teaching, Coach, Instructor, Tour Guide

**Brand:** bietrun
**Price:** S$86
**Availability:** ✅ In Stock

## Summary

> 🎤 Amplify your voice, amplify your impact — be heard, be unforgettable!

## Quick Answers

- **What is this?** Bietrun Voice Amplifier for Teachers with Bluetooth, Portable Rechargeable Wireless Voice Amplifier with Headset Microphone Portable Megaphone Speaker for Teaching, Coach, Instructor, Tour Guide by bietrun
- **How much does it cost?** S$86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/548353932-bietrun-voice-amplifier-for-teachers-with-bluetooth-portable-rechargeable-wireless)

## Best For

- bietrun enthusiasts

## Why This Product

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

## Key Features

- • **All-Day Battery Performance:** Rechargeable 2000mAh battery delivers up to 12 hours of nonstop amplification with just a quick 3-hour charge, keeping you powered through back-to-back sessions.
- • **Powerful 20W UHF Amplification:** Experience crisp, distortion-free sound that fills up to 10,000 sq.ft — no more straining your voice or losing your audience.
- • **Lightweight & Ultra-Portable Design:** Weighing only 0.45 lbs with a convenient back clip and waistband belt, it’s the perfect hands-free companion for teachers, coaches, and tour guides on the move.
- • **Seamless Bluetooth 5.0 Connectivity:** Effortlessly pair with your smartphone or MP3 player for wireless audio streaming and multi-source versatility including TF card, USB, FM radio, and AUX input.
- • **Dual Microphone Setup for Maximum Flexibility:** Includes both wireless and wired headset microphones so you never miss a beat — plus a smart sleep mode to save power when idle.

## Overview

The Bietrun Voice Amplifier TS-230 is a compact, rechargeable 20W UHF wireless megaphone designed for professionals who need clear, powerful sound in classrooms, tours, or coaching sessions. Featuring Bluetooth 5.0, dual wireless and wired headset microphones, and multi-source audio support, it delivers up to 12 hours of battery life in a lightweight, portable form factor with smart power-saving features.

## Description

Voice Amplifier with Microphone Headset, Portable Rechargeable Megaphone Speaker Amplifier with Recording, FM Radio, USB, TF Card Play, for Tour Guides, Coach, Teaching

Review: Mini But Mighty - I was commissioned to do a series of presentations for the local library system, and because my normal voice is fairly soft, I researched for a voice amplification device that teachers use to talk over the din of 30 kids, and found this one recommended. I've only used it so far once, but it did a stellar job, so much so, I returned the one that was over twice the price and about 5 times the weight and size! The larger, heavier, bulkier PA had more (useless) features like FM, which added complexity when pairing with the headset. Also, this bigger, bulker PA said it records the input sound - I ordered twice, and both times this feature failed. This mini but mighty unit pairs automatically to the headset and it is ready to go. I did a decibel meter check, and although this 20 watt was several db lower than the 30 watt much bigger device, it filled the library room satisfactorily with sound. There was no "room" for the lecture, the room was the open library itself! Another impressive feature as well is this once comes with a wired mic as well as a backup. This is different to comparable units that only offered one ... or bundled with a handheld mic, which I don't want for lectures as I need two hands to use the pointer, advance slides and call for audience. Plus, hand held mics for lectures are bad as you naturally drop the mic lower and lower as time goes on to a point it no longer amplifies. The other cool thing about this setup is that it comes with ONE charging cable, that has a Y, one for speaker, the other for headset. The "top of the line" 30 watt PA had two individual charging cords, so easy to misplace. When I did a test run for my next session, the librarian noted a buzzing noise at max volume, so I turned it down a touch so it would not be so "buzzy". My audience is especially a challenge as it it mainly seniors, who are hard of hearing. This next session is in a closed room with tables and chairs for 24, so I do not anticipate any hearing issues, but I will post an update if something goes wrong. So far this is a mini, but surprisingly mighty, inexpensive, PA system has done well.
Review: No echo! - Very good Personal Amplifier. If a UHF unit so there is no latency (echo). Ideal for a small to a good size medium size room. Recommend!

## Features

- Warm Tips: Do not put the microphone in front of the voice amplifier when using it, otherwise it may cause noise or statics.
- ★UHF 20W Voice Amplifier:The Bietrun voice amplifier adopts UHF transmission, with 20W peak power to output powerful, clear, crisp and no noise & distortion sound. ★It covers about 10000 sq.ft (1000 ㎡), and the stable performance perfect for amplifying your sound and saving your throat.
- ★Rechargeable and Long Battery life: Personal voice amplifier built-in a 2000mAh rechargeable lithium battery, works 12 hours at max volume and takes only 3H with a full charge.★The wireless microphone can be used for about 6 hours. ★2 in 1 charging cable(Included) charges amplifier and wireless mic simultaneously.★If no input signal is detected within 20 seconds, speaker will enter sleep mode automatically to save power.
- ★Portbale, Lightweight and Compact: The speaker is a portable public address system.★Weights only 0.45 lb/204g, equipped with a back clip to fix the device at your belt or pocket, or you can hang it around your waist with the included waistband belt. ★You can use this in any setting from indoor to outdoor use, perfect for teachers, coaches, training, presentation, tour guide, classrooms etc. A big help in speaking to 50+ members in your group.
- ★Bluetoothe & Multi-function: Touch the SOURCE button 3 times to switch to bluetooth 5.0(30M) mode, then turns on Bluetooth on the phone, search "Bietrun” and pair it. ★Support TF(Micro SD) card, USB Disk, FM radio, Recording(Only in wired mic mode), 3.5mm AUX audio input and touch display.★You can long press Play/Pause button to repeat single tune or loop all music. ★Please make sure the TF card/USB Disk(Not included) is inserted before recording.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09P2T2FP7 |
| Antenna Location | Singing |
| Audio Input | Wired microphone, Wireless microphone, 3.5mm AUX audio input, TF card |
| Best Sellers Rank | #97,603 in Sporting Goods ( See Top 100 in Sporting Goods ) #88 in Coach & Referee Megaphones |
| Brand | Bietrun |
| Color | Black |
| Colour | Black |
| Compatible Devices | MP3, Smartphone, TF Card, U DIisk |
| Compatible devices | MP3, Smartphone, TF Card, U DIisk |
| Connectivity Technology | Bluetooth, UHF |
| Connectivity technology | Bluetooth, UHF |
| Connector Type | Aux |
| Customer Reviews | 4.1 out of 5 stars 248 Reviews |
| Enclosure Material | Plastic Metal |
| Included Components | Charging Cable, Voice Amplifier, Waistband Belt, Wired Microphone Headset, Wireless Microphone Headset |
| Item Dimensions | 9 x 3 x 11.5 centimeters |
| Item Weight | 300 Grams |
| Item dimensions L x W x H | 9 x 3 x 11.5 centimeters |
| Manufacturer | Bietrun |
| Mfr Part Number | TS-230 |
| Model Number | TS-230 |
| Mounting Type | back clip |
| Mounting type | back clip |
| Number of Channels | 60 |
| Output Wattage | 20 Watts |
| Power Source | Battery Powered |

## Product Details

- **Brand:** Bietrun
- **Item dimensions L x W x H:** 9 x 3 x 11.5 centimeters
- **Connectivity technology:** Bluetooth, UHF
- **Colour:** Black
- **Compatible devices:** MP3, Smartphone, TF Card, U DIisk

## Images

![Bietrun Voice Amplifier for Teachers with Bluetooth, Portable Rechargeable Wireless Voice Amplifier with Headset Microphone Portable Megaphone Speaker for Teaching, Coach, Instructor, Tour Guide - Image 1](https://m.media-amazon.com/images/I/81QYt53POyL.jpg)
![Bietrun Voice Amplifier for Teachers with Bluetooth, Portable Rechargeable Wireless Voice Amplifier with Headset Microphone Portable Megaphone Speaker for Teaching, Coach, Instructor, Tour Guide - Image 2](https://m.media-amazon.com/images/I/81QGRVqnELL.jpg)
![Bietrun Voice Amplifier for Teachers with Bluetooth, Portable Rechargeable Wireless Voice Amplifier with Headset Microphone Portable Megaphone Speaker for Teaching, Coach, Instructor, Tour Guide - Image 3](https://m.media-amazon.com/images/I/81ex5YkCBXL.jpg)
![Bietrun Voice Amplifier for Teachers with Bluetooth, Portable Rechargeable Wireless Voice Amplifier with Headset Microphone Portable Megaphone Speaker for Teaching, Coach, Instructor, Tour Guide - Image 4](https://m.media-amazon.com/images/I/71earDPcsSL.jpg)
![Bietrun Voice Amplifier for Teachers with Bluetooth, Portable Rechargeable Wireless Voice Amplifier with Headset Microphone Portable Megaphone Speaker for Teaching, Coach, Instructor, Tour Guide - Image 5](https://m.media-amazon.com/images/I/717cuYwFuYL.jpg)

## Questions & Answers

**Q: Should we carry all the time during conference or can we place it on somewhere on table**
A: I give tours with it in my vehicle and I sit the speaker in the area of the passengers and it works great

**Q: no charger included?**
A: Call the sale people. Usually, these kits have a USB connection with them.

**Q: How to I get my iPhone music to play through the amp while simultaneously speaking into the wireless head set mike to call out line dance steps?**
A: I connect my iPhone via bluetooth to the speaker I'm using, and that's where my music comes from. (I use this mic to teach a fitness class, so my microphone plug is connected to a second speaker in the studio.)

**Q: Will i be able to hear my students through this device?**
A: The headset doesn’t cover your ears, so hearing things is all based on how loud your music is

## Customer Reviews

### ⭐⭐⭐⭐⭐ Mini But Mighty
*by G***N on 18 August 2023*

I was commissioned to do a series of presentations for the local library system, and because my normal voice is fairly soft, I researched for a voice amplification device that teachers use to talk over the din of 30 kids, and found this one recommended. I've only used it so far once, but it did a stellar job, so much so, I returned the one that was over twice the price and about 5 times the weight and size! The larger, heavier, bulkier PA had more (useless) features like FM, which added complexity when pairing with the headset. Also, this bigger, bulker PA said it records the input sound - I ordered twice, and both times this feature failed. This mini but mighty unit pairs automatically to the headset and it is ready to go. I did a decibel meter check, and although this 20 watt was several db lower than the 30 watt much bigger device, it filled the library room satisfactorily with sound. There was no "room" for the lecture, the room was the open library itself! Another impressive feature as well is this once comes with a wired mic as well as a backup. This is different to comparable units that only offered one ... or bundled with a handheld mic, which I don't want for lectures as I need two hands to use the pointer, advance slides and call for audience. Plus, hand held mics for lectures are bad as you naturally drop the mic lower and lower as time goes on to a point it no longer amplifies. The other cool thing about this setup is that it comes with ONE charging cable, that has a Y, one for speaker, the other for headset. The "top of the line" 30 watt PA had two individual charging cords, so easy to misplace. When I did a test run for my next session, the librarian noted a buzzing noise at max volume, so I turned it down a touch so it would not be so "buzzy". My audience is especially a challenge as it it mainly seniors, who are hard of hearing. This next session is in a closed room with tables and chairs for 24, so I do not anticipate any hearing issues, but I will post an update if something goes wrong. So far this is a mini, but surprisingly mighty, inexpensive, PA system has done well.

### ⭐⭐⭐⭐⭐ No echo!
*by J***C on 19 June 2026*

Very good Personal Amplifier. If a UHF unit so there is no latency (echo). Ideal for a small to a good size medium size room. Recommend!

### ⭐⭐⭐⭐ Gets the job done, but not the best.
*by A***A on 18 April 2023*

Comes with two headsets: a wired one and a bluetooth one. I tend to use the wired one cause hooking up the bluetooth one seems to be a pain. It's difficult to control the touch settings on the pack itself. The sound quality sounds muffled like talking through a phone, so it's not the best. But it is pretty loud and works well in a large room.

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-08-04*