Voice amplifiers can be exceptionally useful for teachers, especially in times where we teach with face masks. We depend on our voices to communicate with our students, and sometimes we can lose our voice from doing so. I have had this experience more than once. A portable voice amplifier has been the best solution to constant yelling or over-talking as these small devices offer significant benefits. They work by connecting a teacher’s microphone to a small speaker. Portable voice amplifiers or PA speakers are a reliable way to help teachers speak audibly and sharply while wearing a mask. In this article, you will find the 10 best voice amplifiers in 2021 reviewed.

How to Use Voice Amplifiers Over Your Face Mask

Before we dive deeper into the reviews of each product, let’s have a quick look at this video. This classroom teacher explains how she uses a voice amplifier so that students can hear her when she wears a mask while teaching.

Best Voice Amplifiers For Teachers in 2021 at a Glance

Below you will find our reviews of each product, but let’s begin with a quick shortlist of our 10 favorite voice amplifiers to buy on Amazon:

  1. SD-M800 Wireless Voice Amplifier
  2. Zoweetek Portable Rechargeable Voice Amplifier
  3. Giecy G300 Portable 30W
  4. ZOWEETEK with UHF Wireless Microphone Headset (Our Top Choice)
  5. Wireless Voice Amplifier with UHF Portable Microphone Headset
  6. WinBridge Wireless Voice Amplifier Microphone Headset Bluetooth
  7. SHIDU Portable Rechargeable Speaker Microphone Headset
  8. NORWII Portable Rechargeable with Wired Microphone Headset & Waistband
  9. Voice Amplifier Portable Wired Speaker
  10. AIMIY Voice Amplifier

Our Top 10 Voice Amplifiers Reviewed

1 . Wireless Voice Amplifier with UHF Portable Microphone Headset


Shidu Microphone Headset

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About This Item

Small and powerful, this Shidu Wireless Voice Amplifier is loud enough to accommodate teaching in any environment, including the great outdoors. With a strong 18W output, you will easily be able to reach any class size upwards of 65 people.

You will not have to worry about social distancing with this compact amplifier because the range can reach up to 100 feet away. Being able to have this tool that is powerful enough to reach such a distance gives you the flexibility to break out of the classroom for some fun outdoor education.

This portable voice amplifier’s lightweight design makes it easy for anyone to clip on and walk from one place to the next. Also, the impressive battery life will leave you completely satisfied with minimal charging time and maximum use.

What We Like

This wireless speaker weighs in at less than one pound with a small rechargeable battery, making this lightweight device easy to tote. The high-quality design includes a wireless microphone headset and is Bluetooth enabled. Enjoy up to 12 hours of use on a single battery charge! This voice amplification device also comes with a USB charging cable, AUX cable, a waistband for portability, and a wall charger.

2. Zoweetek Portable Rechargeable Mini Voice Amplifier



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About This Item

For under USD 40.00 and less than half a pound in weight, this is a great voice amplifier for educators. The sound that comes from the Zoweetek voice amplifier is clear, crisp, with no noise and distortion. It is small enough to be carried around and can the built-in speaker is loud enough to cover a big classroom of up to 1000 ㎡. With this device, you will be able to speak quite softly, and the sound carries well indoors and outdoors.

What We Like

This voice amplifier is compact and lightweight, coming in at about 4 inches, which makes it perfect for clipping it to the back of your belt or pocket. You can also use it to tie around your waist or hang it on your neck if you needed to. This device was created with a higher-end lithium battery so that you can easily use it continuously for up to 12 hours.

Charging this device is easy and user-friendly as it takes a USB cable to charge this mini voice speaker and only needs 3 to 5 hours to charge it fully. The wired head-worn microphone is adjustable. You can comfortably adjust the distance between your mouth and the mic.

3. Giecy G300 Portable Voice Amplifiers


Giecy Portable 30W Voice Amplifier

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About This Item

The Giecy portable voice amplifier has overall quality sound, is user-friendly, and has excellent battery life. Most people who use this voice amplifier device are teachers, guides, or instructors.

This device is loud enough, delivering 30 watts of clear and soft sound to cover a big room full of students or outdoors in a large crowd. This specific portable microphone can be connected via Bluetooth. Overall, the Giecy G300 is a decent portable voice amplifier that offers all the features you could ask for as a teacher.

What We Like

With 30 watts of clear and soft sound, this microphone system will cover about 10000 sq. ft, about 1000 ㎡. This device is compact and lightweight, coming in at about 4 inches and less than half a pound! This device was created with a higher-end lithium battery so that you can easily use it continuously for up to 18 hours of speaking and up to 13 hours of playing music.

This voice amplifier TF (Micro SD) card & USB flash drive allows this device to support playing media on the device. Not only is this device a voice amplifier, but it also is a portable Bluetooth speaker. You can stream your favorite music from any type of Bluetooth-enabled mobile device, up to 33 feet away.

The lithium battery in this device allows the microphone speaker to charge in 3 to 5 hours. This microphone and speaker set is a portable PA system, so you can take it to various places such as classrooms, activity or exercise rooms that need a speaker, and the outdoors.

Best Wireless Mic Voice Amplifier

4. ZOWEETEK Portable Rechargeable Mini Voice Amplifier



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About This Item

This voice amplifier sound is high quality and has excellent battery life too. The difference between this ZOWEETK voice amplifier and the first one mentioned above is a highly recommended wireless mic. Students can hear the teacher’s amplified voice better. Instructors can wear this around their necks while the headset is wireless.

Teachers projecting their voice through a mask and possibly a plexiglass partition can be exhausting. With this wireless handheld device, teachers can set the speaker on a table close to the kids and speak normally. Having Bluetooth available creates a more comfortable workspace with no extra cords around. This device also supports USB flash drive playing & TF card playing.

This wireless microphone is considered a speech aid. It is lightweight, hands-free, and compact. It can be attached to a belt for easy use. A voice amplifier improves the learning and the teaching experience, improves communication, and increases classes, lectures, meetings, and sales presentations.

What We Like

The Zoweetek wireless microphone voice amplifier is a high-power, ultra-lightweight, portable PA system with extensive coverage. This PA sound system combats a portable mini loudspeaker with a UHF mic, an excellent public address speaker set. This device is a rechargeable voice amplifier with an extensive usage time of up to 15 hours, covering nearly 5,300 sq. ft.

It is the best portable voice amplifier for teachers who need a wireless microphone headset featured with an outpower of 10 watts. The features include shuffling songs, repeating a single number, and playing songs on a loop.

5 . Wireless Voice Amplifier Bluetooth Teacher Microphone


shidu Bluetooth Teacher Microphone

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About This Item

Multifunctional and powerful, you will not go wrong with these portable voice amplifiers. This might speaker system has many different features that allow you to project what you are saying and record your lesson at the same time. There is no reason to strain your voice in the classroom because this little audio amplifier has the power to reach students for you.

This speaker has a USB port, an auxiliary import for a microphone, and even has a space for a TF card. Don’t ever worry about volume because this product guarantees that it has enough power to deliver a quality sound all the way to the back of the class.

What We Like

These portable voice amplifiers have a battery life of up to thirteen hours with just three hours of charging. This item comes with a wireless headset with a mic and features Bluetooth accessibility so you can enhance your speaking with music connected from your phone. Even better is that this portable voice amplification tool is water-resistant and will work in the great outdoors.

Also, this little tool features an audio input so that you can connect other items. With 18W of power, you can ensure that the speaker in these voice amplifiers will come through loud and clear. This multifunctional tool comes with a mic headset, manual power charging cord, and a 3.5mm charging cable.

6. WinBridge Wireless Voice Amplifiers Microphone Headset Bluetooth



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About This Item

You will not go wrong with these portable voice amplifiers! This small but mighty speaker system from WinBridge comes with a ton of features that will help you deliver your message without straining those vocal cords. With wide coverage, these audio portable voice amplifiers come with a quality wireless mic headset with up to 5 hours of continued use. Plus, you cannot go wrong with BlueTooth technology to help add to any presentation to make it more interesting!

What We Like

This awesome headset has a detachable mic that can be worn over the ears, on the shoulders, or completely detached to be used as a handheld microphone. These portable voice amplifiers have an auxiliary audio input, easy-access volume control, a USB input, and weigh less than half of a pound. Reach your audience from up to 50 feet away and still be able to maintain social distancing, keeping yourself and others safe from potentially harmful viruses.

Fun Design of Voice Amplifier

7. Portable Voice Amplifier SHIDU Personal Speaker Microphone Headset


SHIDU Portable Mini Voice Amplifier

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About This Item

The SHIDU voice amplifier is considered a great value and has such a fun design and color! If you’re looking for a handheld, feminine, fun-colored wired microphone as a teacher or instructor, this one is perfect. It is easy to use, has incredible sound quality, is lightweight. This voice amplifier is compact but pushes out excellent quality with a 10-watt output crystal clear sound.

You can be sure to use this amplifier as it is loud enough to cover a room with a large group of 25 to 100 people. This stable achievement is perfect for amplifying your sound and conserving your voice. You can use the detachable back clip to fix this device on your belt or pocket, or you can choose to tie it around your waist or hang it on your neck with the help of the waistband.

Similar to the multiple voice amplifiers mentioned above, this is built with a 1800mAh rechargeable lithium battery. This device provides 8 to 12 hours of amplification time and 6 to 10 hours of music time with a full charge. Additionally, you can use a TF card or USB flash disk for playing music.

Although this is not a wireless option, the microphone headset is lightweight and adjustable. You can adjust the distance between the microphone and the mouth. The comfortable design makes it convenient for teaching, training, presentations, and other activities.

What We Like

The voice amplifier is compact in size, but with an 1800 mAh rechargeable lithium battery, this portable microphone can meet extended use needs. If using this mobile pa system for large groups, you can be assured that your voice will reach your audience. There is an adjustable microphone and the headset, and while using this device, you can comfortably attach it to your pocket or waistband with the provided clips. Supporting music mode with a TF card, also known as a Micro SD card, USB, and Aux cable for teaching, presentations, tour guides, large meetings, and more!

Budget-Friendly Voice Amplifier

8. NORWII S358 Portable 2000mAH Rechargeable Voice Amplifier



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About This Item

With a small price and significant volume, the NORWII S358 voice amplifier will work perfectly if you are on a budget. It is fashionable, so perfect for teachers, guides, or instructors that want to have a little bit of color to this accessory. It is compact and lightweight (just over half a pound), covering up to 10,000 square feet. Using these voice amplifiers as a teacher will help eliminate mask muffle while teaching and proven comfortable for all-day wear.

Unlike those mentioned above, this voice amplifier has a 2000mAh built-in battery and provides 18 to 20 hours of usage. You charge this mini voice speaker with a USB Type-C port. On the other hand, similar to those above, this comes with an adjustable band that you can use to tie around your waist or hang on your neck and has a clip on the back to clip on a belt to the pant waistband.

What We Like

The 10-Watt device can conduct clear and crisp speaking to up to 10,000 square feet of a room with a large group of 25 to 100 people. With a battery life of up to 20 hours, the product is powered by a rechargeable lithium battery. You can also charge it with a USB Type-C port cable and be fully charged within 3 to 5 hours.

The wired headset is adjustable to choose the distance between your mouth and the microphone comfortably. The microphone is a special acoustic one, guaranteed to deliver high-quality sound. The stylish look of the device made from ABS material will enhance your overall look.

9. Voice Amplifier Portable Wired Speaker


Aporo Portable Wired Speaker

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About This Item

Don’t be automatically turned off by this wired speaker because this little audio device is powerful enough to deliver your message with clear and concise sound. This Aporo voice amplifier can work in any setting, but indoors and out, and is the perfect addition to those needing to amplify their voices through a pesky face mask.

The light and compact design of this item make this speaker easy enough to tote around in a purse or bag and includes a one-year warranty. Plus, this item has a 30-day, no questions asked, return policy. You literally have nothing to lose in trying this item!

What We Like

Anyone who spends their own money to purchase one of these knows that they want a quality item that will not quit on them. This amplifier has a powerful audio speaker that will be sure to deliver to audiences in small class to larger class auditoriums. On top of being able to use this item as a personal amplifier, you can also use it as a personal music player or even a recording device.

This device has a large capacity battery that will give you up to twelve hours of use on a full charge. Moreover, this item takes about four to five hours to fully charge to give you the optimum amount of power. With an accessible USB port and aux intake, you can listen to music on this device for hours.

10. AIMIY Voice Amplifier



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About This Item

Super cute and budget-friendly, don’t take this AIMY amplifier being last as being the least! This little voice amplification device has all of the features of a more expensive unit while still delivering quality sound to you and those needing to hear you. With its compact design, this device can easily clip onto a belt loop or pocket during use, and you will completely forget it is even on you!

This small speaker will allow between 50 and 80 people at one time to hear you loud and clear. Also, coming in both black and white, you can make your device fit your personal style!

What We Like

The compact style of this device delivers 10W of power to your audience and has an easy-to-access volume control on the sides. This item features a wired mic, USB port, aux input/output and can cover up to 500 square meters! Plus, this audio device with microphone use will work for up to four hours on a three-hour charge.

This item is perfect for the teacher who is not wanting to break the bank for something that will save their voice. Plus, speaking through a mask is not easy at all, and this will make that task so much easier.

How Does A Voice Amplifier Work?

A voice amplifier is a device that can be used to amplify (increase volume) your voice. Voice amplifiers help teachers when they need to talk to their students through a mask, outdoor tour guides to amplify their voices so that the crowd can hear clearly, exercise instructor to project their voices so that the people in the back can listen to and understand what to do and much more.

If you’ve ever lost your voice for the day or week, you can understand how frustrating it is. Imagine as a teacher, having to project their voice all day, every day, and possibly losing their voice too. A voice amplifier will allow any soft voice to be heard. Amplifiers are essential for significant events or assembly.

You can use any of the voice amplifiers mentioned above indoors or outdoors, and they all are relatively easy to use with on and off buttons and digital controls for the volume. Plugin the headset, clip the unit to your belt or waistband, and turn it on!

Watch this demo video about how to set up the voice amplifier in a large classroom with an additional snowball microphone for online lessons.

Benefits To Using A Voice Amplifier

Those who do not have a generally powerful voice but works in a profession that demands one, such as a teacher, can cause significant problems to their vocal cords and/or their larynx. Consistently creating so much pressure can ultimately lead to permanent damage later in their career.

As I have mentioned above, it is not uncommon for teachers to ultimately lose their voice or can’t talk above a whisper. This is where a voice amplifier comes in handy and can prevent these effects on their throat. Additionally, when a teacher or instructor chooses to use a voice amplifier, they tend to deliver multiple lectures easier because they are not exhausted from speaking all day, enhancing their skills and ability to perform that much more in their job.

How Can I Amplify My Voice in the Classroom?

There are many ways and benefits to amplifying your voice as a teacher, and the inherent advantages of voice amplifiers should not be underestimated. The following are the top benefits you can experience.

The Instructor’s Voice Will Be Loud and Clear

While wearing a face covering or mask, teachers can confidently say that their students will clearly hear all they have to offer in their education. That means less risk, less sacrifice, and better outcomes for all. Using a voice amplifier as a teacher can significantly help those who find it hard to hear. The teacher will come across more clearly and be more audible for the student if the teacher uses a microphone.

Enhanced Student Performance

Since mask-wearing has become more mandated in public areas, it can negatively affect the students’ education if they cannot hear their teacher through their masks. One way many teachers and instructors are battling this is using portable voice amplifiers or microphones. Using devices that enable your voice to project louder will ensure that all students in a classroom can adequately hear the teacher loud and clear, which ultimately enhances the student’s performance during these trying times.

Additionally, when using a portable voice amplifier in a classroom setting, this device will allow the teacher to have decreased interruptions by students needing to clarify what they would not be able to hear otherwise.

Tips for Speaking Louder in the Classroom

Your voice’s ability to vocalize and project in a classroom can be affected by many factors such as bad posture, breathing techniques, and your vocal capacity. There are several things you can attempt if you have a problem amplifying your voice in the classroom.

Bad Posture

A person’s posture seriously affects their voice, so when speaking, have natural, relaxed shoulders. Be sure also to keep your head centered and loosen your jaw.

Breathing Techniques

Breathing techniques come as a surprise to many. Still, to really project your voice and amplify your voice and get the projection you are looking for, it is essential to understand how to incorporate breathing techniques. Learning how to breathe and speak from your diaphragm can tremendously help you improve your voice. Breathing from the diaphragm enables people to control their breaths easier while speaking. Exhaling deeply encourages your diaphragm to move up, which ultimately assists with making your voice sound more loud, confident, and impressive.

Vocal Capacity

Warming up your vocal cords is pretty essential when you plan on talking for long periods of time. Whether you are setting up for a speech in front of others, teaching a classroom, or merely instructing others if you are speaking a lot, it’s wise to warm up your vocal cords and prepare them for strenuous usage. If you don’t warm up your vocal cords, you run into the risk of straining them or doing temporary or permanent damage to your voice.

It would be best if you warmed up those vocal cords before using them. Some warm-ups can include humming, lip trills (the noise you’d make if you were imitating the sound of a toy car or airplane), or breathing exercises. Some breathing exercises could be practicing to expand the inside of your stomach, throat, and mouth. From within your diaphragm, broadly open your mouth and throat and amplify your voice from within your diaphragm. Implementing these techniques and warm-ups will equip your vocals to sound your entire best during the time you are speaking.

Is There an App to Amplify My Voice?

If you are looking for an app that could amplify your voice, you can use the following apps for either an iPhone or an Android instead of another physical device!

For iPhone Users


Megaphone is a must-have free* app that instantly transforms your iPhone or iPad into a microphone when you connect it to external speakers. With crystal clear sound and an easy setup, you can make yourself heard in minutes.

How it works:

  1. Connect your iPhone or iPad to external speakers via the headphone jack or lightning port.
  2. Launch the Megaphone app
  3. Start speaking and hear your voice amplified through the speakers, loud and clear.

To use wireless speakers, you have to upgrade to the Pro version of Megaphone to pair via Bluetooth. Once your device is paired, you can stream your voice to the speakers and say your piece.

Whether you’re teaching a lecture full of students or stretching and needing to project your voice over the music in spin class, this Megaphone app is the simplest way to amplify your voice. No need for a microphone or PA system again! Additionally, if you choose the upgrade version, you will be able to stream your voice to a second iOS device or an Apple TV over WiFi, then connect the second device to external speakers for a truly wireless experience.

Key Features The Megaphone App Has
  • Crystal-clear sound quality
  • Connect to wired speakers
  • Connect to Bluetooth speakers*
  • Connection to speakers via AirPlay*
  • Stream your voice to a second iOS device over WiFi*
  • Stream your voice to an Apple TV*
  • Run Megaphone in the background*
  • Ad-free usage*
  • Dark Mode*

* Requires Megaphone Pro, available via in-app purchase. Apple TV streaming requires Apple TV fourth-generation or later.

My Microphone

My Microphone app lets you use your iOS device as a live microphone. This app makes it great for use in public speeches, karaoke, or practically anywhere you need to use a microphone.

How it works:

  1. Connect your phone to a stereo system or via Bluetooth
  2. Plug it in
  3. Start talking!
Key Features Of The My Microphone App Has
  • Single-button control
  • Automatic recorder for your performance
  • Microphone gain control
  • Eight sound effects for tweaking your voice
  • Karaoke section with the most popular songs in English

For Andriod Devices


This app enables your phone’s microphone to be connected to an external speaker or amplifier. This app is free on the Google Play store.

How it works:

  1. Connect your phone to a stereo system or via Bluetooth
  2. Plug it in
  3. Start talking!
Key Features Of The Microphone App Has
  • Amplifier
  • Mono / Stereo (Balance channel individually)
  • Equalizer adjustments
  • Line-In / Line-Out selection
  • Sampling rate selection
  • Widget support
  • Lock Screen
  • Re-sizable
  • Supports Locale/Tasker as a plugin

WO Mic

This app is an excellent virtual tool if there is no regular microphone readily available. This android app will allow your phone to be connected to a computer via Bluetooth, USB, or WiFi. This app is free on the Google Play store but offers an in-app purchase to remove ads.

How it works:

  1. Connect your phone to a stereo system or via Bluetooth
  2. Plug it in
  3. Start talking!

About the Author

Brittany Ray

Brittany is a dedicated educator to students in high needs schools, a habitual DIY’er, and an avid runner. She is a high school teacher by day and a passionate freelance writer by night. Her passion and life mission with her work is to help students and teachers in practical ways that will allow them to flourish. Brittany loves spending time with her family and being outside any chance she can get. She loves taking the family on long bike rides and on family hikes in the beautiful surrounding areas of the Midwest. You can check out her projects and life encouragement on her blog.

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