Portable Voice Amplifier Wireless & Wired Headset Microphone Speaker Mini Lightweight Personal Classroom Mic for Teachers Supports AUX Input,Bluetooth 5.0,Recording - S278UHF


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  • AMPLIFY YOUR VOICE WITH CLARITY -- S278UHF professional portable voice amplifier allows your voice to be heard in every corner! Mini speaker produces 15 watts of loud clear and undistorted sound that can cover about 10000 sq.ft (1000 ㎡). Portable microphone helps you to speak with a lower voice, saving your vocal cords unnecessary stress. Megaphone speaker is so easy to use, the tone is incredible, volume control can be easily adjusted to fit the room and function needs.
  • COMES WITH 2 MICROPHONES -- S278UHF is a personal voice amplifier that comes with wireless & wired headset microphone. Easy set up and the headset is comfortable. Moreover, the wireless microphone is a headset and handheld 2 in 1 design, so you can easily change the headset mode to handheld mode to meet your needs. Hands-free microphone speaker system with low interference and high signal stability, no static, no drop out with use at a distance of 15~65 feet.
  • ULTRA-LIGHT & COMPACT DESIGN -- S278 UHF is a mini voice amplifier with headset microphone which is only 4.5 * 3.5 * 1.3 inches and 0.44 lbs. The voice amplifier includes adjustable waist/neck band for hands-free portability.It is a great aid for anyone who needs to talk all day long, especially teachers,instructors who need their voice for their profession. Portable microphone and speaker set is ideal for teaching, presentations, trainings and public speeches.
  • LONG BATTERY LIFE-- Personal voice amplifier lasts a long time (10~12 hours); WIRELESS headset microphone lasts 3~5 hours. The equipped 2 in 1 multiple USB cable and 5V charger make charging very convenient. Only needs 3~5 hours to fully charge them.
  • MULTI-FUNCTIONAL -- Personal voice amplifier can be used as a portable speaker. It has a built-in Bluetooth 5.0 with a working range up to 33ft. Easy connection to Bluetooth, AUX, TF/USB input. It can record audio as streamed through the microphone with USB/TF card inserted. PLEASE REST ASSURED TO BUY - We provide lifetime technical support for HaoWorks voice amplifiers. Please feel free to let us know if you have any questions. We will work hard to provide you with a satisfactory solution.
Brand HW HAOWORKS
Item dimensions L x W x H 4.17 x 3.4 x 1.4 inches
Connectivity Technology Bluetooth
Color Black
Compatible Devices Amplifier, Headphone, Speaker

  • acusbooth67@gmail.com

    08-03-2026

    Ar first I loved this. I had to charge it often, but it was loud and worked well. However, after only two weeks of using it, the sound began cutting in an out. At one point, it stopped working completely.

  • betteannsheffy1hgwvx@gmail.com

    08-03-2026

    I bought this one because it has a wireless headset. As a teacher the unit worked great in my class, no feedback issues, clear sound - it was ideal and worked wonderfully for exactly one school day! The next morning when I turned it on after having it charge overnight, the wireless headset wouldn't work or hold a charge. Super disappointed.Edited to add: I reached out to customer service and they were great about sending me a replacement headset. I have changed my rating!

  • aron@microsoft.com

    08-03-2026

    Very good volume amplification and sound clarity. Has worked well in small meetings to help a participant who has a throat problem Recharges easily and is holding up well. Only using the headset configuration.

  • gichelleona@yahoo.com

    08-03-2026

    Was delivered right on time. Works great so far. It was charged up ,both the amp and the wireless headset, but within 3 days I had to charge the head set ( something I have to remember)I would definitely refer my friends and family for this product. Thank You WinBridge, I will shop with you again.

  • pilloffhinton086@gmail.com

    08-03-2026

    Following is a review provided by a Tour Guide who uses the WinBridge Original Voice Amplifier S278 UHF (sold by HW HAOWORKS on Amazon)."While leading tours, I often work two 3-hour tours a day. The S278 UHF allows me to provide my guests with a crisp and clear narrative without shouting or yelling while preserving my voice and providing informative info to my tour visitors. I use this voice amplifier every single workday. It is convenient, portable & easy to use while navigating on tour. "This Voice Amplifier has become our company's choice because of its clear, distinct output and excellent Bluetooth connectivity.

  • sky@microsoft.com

    08-03-2026

    As a kindergarten teacher, this voice amplifier is so helpful! It allows my students to hear me clearly and it is conveniently wireless. With its Bluetooth capabilities, it can also be used as a speaker to play music. I would highly recommend this!

  • mrosariovalerianosoleto@gmail.com

    08-03-2026

    Me ha ayudado mucho el micro inhalambrico, tiene un gran sonido, lo uso para clases de yoga y eventos. Recomiendo ampliamente

  • yakoiakbhaiya@gmail.com

    08-03-2026

    Hola porfavor me gustaría ayuda tecnica, el microfono inalambrico no logra conectarse a la bocina, ya seguí todas las instrucciones y simplemente no se enlaza, muchas gracias.

  • michelleeqcarolij0751@gmail.com

    08-03-2026

    I purchased this product the third day of teaching a room full of third grader's with a mask on and it has saved my voice! I use the Bluetooth mic every day and connect wirelessly to the speaker on the other side of the room. This is the way I thought I'd use it but now that I've been at it awhile I've discovered that it's perfect for amplifying sound from my computer or the overhead projector I regularly use. Better still, it give voice to my students! I keep the speaker on all day and I turn the microphone on and off. I have NEVER had a battery life issue and it's used five days a week from 8:30-2:30.This should have been enough to compel me to write a glowing review (many of my friends have purchased this on my recommendation) but something just happened that I'm still trying to wrap my head around. Today while a student was reading the microphone inexplicably stopped working. I tried everything to no avail. Fortunately, I had purchased this product with the wired mic which I used until the end of the day. I wrote an email to the company around noon with very low expectations that it would end with a positive result. Unbelievably I have already received a reply email AND IT SOLVED MY PROBLEM!The product does what it's supposed to and the company supports its product. What more can you ask for?

  • uxlenanancyoj6342@gmail.com

    08-03-2026

    Unit performed as advertised. Good deal for the price.

  • qsusanehelenuy3052@gmail.com

    08-03-2026

    Update - upon reading my review, the company emailed me and sent me a new one. So far (it’s been 4 weeks) it’s working fine. Great customer service!Original review: 1 starBought this for my classroom, quality was okay but not great (screeching sound if I got too close to the speaker, it cut in and out frequently). After a few months of use, the battery won’t charge but it’s beyond the return window.

  • mauckhaenerdraza1991@gmail.com

    08-03-2026

    Honestly, I have used this product multiple times for coaching cardio dance. It’s super effective when my clients need to hear me over the music, easy to use, and easy to recharge! Only issue: wish the headset was a bit for adjustable and could tighten.

  • paluhivan89@gmail.com

    08-03-2026

    This is a great tool for me to use in the classroom. I recently was diagnosed with muscle tension dysphonia from using my voice so much. This amplifier gives me the ability to speak to my 35 students and not have to strain my voice. I am able to turn the volume all the way up and lower my voice almost to the point of a whisper and it picks up my normal voice and my class is able to understand me. I don’t get feedback unless I accidentally hold my cell phone by the speaker. It is easy to charge and holds the battery well.

There have been no reviews for this product yet.
  • acu******

    Ar first I loved this. I had to charge it often, but it was loud and worked well. However, after only two weeks of using it, the sound began cutting in an out. At one point, it stopped working completely.

  • bet******

    I bought this one because it has a wireless headset. As a teacher the unit worked great in my class, no feedback issues, clear sound - it was ideal and worked wonderfully for exactly one school day! The next morning when I turned it on after having it charge overnight, the wireless headset wouldn't work or hold a charge. Super disappointed.Edited to add: I reached out to customer service and they were great about sending me a replacement headset. I have changed my rating!

  • aro******

    Very good volume amplification and sound clarity. Has worked well in small meetings to help a participant who has a throat problem Recharges easily and is holding up well. Only using the headset configuration.

  • gic******

    Was delivered right on time. Works great so far. It was charged up ,both the amp and the wireless headset, but within 3 days I had to charge the head set ( something I have to remember)I would definitely refer my friends and family for this product. Thank You WinBridge, I will shop with you again.

  • pil******

    Following is a review provided by a Tour Guide who uses the WinBridge Original Voice Amplifier S278 UHF (sold by HW HAOWORKS on Amazon)."While leading tours, I often work two 3-hour tours a day. The S278 UHF allows me to provide my guests with a crisp and clear narrative without shouting or yelling while preserving my voice and providing informative info to my tour visitors. I use this voice amplifier every single workday. It is convenient, portable & easy to use while navigating on tour. "This Voice Amplifier has become our company's choice because of its clear, distinct output and excellent Bluetooth connectivity.

  • sky******

    As a kindergarten teacher, this voice amplifier is so helpful! It allows my students to hear me clearly and it is conveniently wireless. With its Bluetooth capabilities, it can also be used as a speaker to play music. I would highly recommend this!

  • mro******

    Me ha ayudado mucho el micro inhalambrico, tiene un gran sonido, lo uso para clases de yoga y eventos. Recomiendo ampliamente

  • yak******

    Hola porfavor me gustaría ayuda tecnica, el microfono inalambrico no logra conectarse a la bocina, ya seguí todas las instrucciones y simplemente no se enlaza, muchas gracias.

  • mic******

    I purchased this product the third day of teaching a room full of third grader's with a mask on and it has saved my voice! I use the Bluetooth mic every day and connect wirelessly to the speaker on the other side of the room. This is the way I thought I'd use it but now that I've been at it awhile I've discovered that it's perfect for amplifying sound from my computer or the overhead projector I regularly use. Better still, it give voice to my students! I keep the speaker on all day and I turn the microphone on and off. I have NEVER had a battery life issue and it's used five days a week from 8:30-2:30.This should have been enough to compel me to write a glowing review (many of my friends have purchased this on my recommendation) but something just happened that I'm still trying to wrap my head around. Today while a student was reading the microphone inexplicably stopped working. I tried everything to no avail. Fortunately, I had purchased this product with the wired mic which I used until the end of the day. I wrote an email to the company around noon with very low expectations that it would end with a positive result. Unbelievably I have already received a reply email AND IT SOLVED MY PROBLEM!The product does what it's supposed to and the company supports its product. What more can you ask for?

  • uxl******

    Unit performed as advertised. Good deal for the price.

  • qsu******

    Update - upon reading my review, the company emailed me and sent me a new one. So far (it’s been 4 weeks) it’s working fine. Great customer service!Original review: 1 starBought this for my classroom, quality was okay but not great (screeching sound if I got too close to the speaker, it cut in and out frequently). After a few months of use, the battery won’t charge but it’s beyond the return window.

  • mau******

    Honestly, I have used this product multiple times for coaching cardio dance. It’s super effective when my clients need to hear me over the music, easy to use, and easy to recharge! Only issue: wish the headset was a bit for adjustable and could tighten.

  • pal******

    This is a great tool for me to use in the classroom. I recently was diagnosed with muscle tension dysphonia from using my voice so much. This amplifier gives me the ability to speak to my 35 students and not have to strain my voice. I am able to turn the volume all the way up and lower my voice almost to the point of a whisper and it picks up my normal voice and my class is able to understand me. I don’t get feedback unless I accidentally hold my cell phone by the speaker. It is easy to charge and holds the battery well.

Welcome to HaoWorks

Your voice, we care. Click on the HaoWorks store to explore more portable microphone and speakers with everyone!

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How did we get started?

HaoWorks started in 2007 with one goal: make loud, clear sound simple to carry. Today, we build rigorously tested voice amplifiers and portable PA Systems used in more than 30 countries—from classrooms to stadiums.

What makes us unique?

Uncompromising quality and responsive service are our core values.Every amplifier is built to last, backed by lifetime after-sales support and a 24-hour response.

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Wireless Voice Amplifiers

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Wired Voice Amplifiers

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S278UHF Voice Amplifier Portable Microphone

S278UHF Voice Amplifier

Bluetooth 5.0 & Multifunctional Design

A reliable voice saver

Wireless Freedom, Made Simple.

Small Voice Amplifier

Long Life Battery

Hand-free microphone with speaker system -- Easy to Carry

S278UHF voice amplifier comes with a wireless and a wired headset microphone which a great aid for you to project your voice. You can be heard clearly at a distance while speaking in a normal voice. It can be used by teachers, instructors, tour guides and people who has a soft voice. Excellent portability with compact size & light weight. Portable voice amplifier can be easily worn at the shoulder or waist without causing any discomfort. Portable microphone with speaker saves your voice and delivers reliable sound quality. Buying the right voice amplifier can help you be excel at your job.

How to do when the sound not loud?

You Will Get: voice amplifier, UHF wireless headset microphone, wired headset mic, 5V 1A charging adapter, AUX cable, 2 in 1 USB cable, waistband and user manual.

Are you bothered because students can't hear you when you're wearing a mask? Are you tired of Shouting and repeating yourself all day? Well, this is perfect for you.

Personal voice amplifier can be used as a portable speaker. Supports TF (Micro SD) card playing & USB flash drive playing. S278UHF has a built-in Bluetooth 5.0 with a working range up to 33ft. Stream your favorite music from any Bluetooth-enabled devices like smartphone,Tablet and more. 3.5mm AUX audio input, easy to use as a wired speaker. It can record audio as streamed through the microphone with USB/TF card inserted.

S278UHF is a portable microphone speaker with 15 watts output power, which can clearly amplify your voice and protect your vocal cords, allowing you to easily make your voice heard by 20 to 65 people.

Wireless headset microphone adopts UHF wireless technology with low interference and high signal stability. 50 meters stable wireless connection at open area, loud, clear and high fidelity sound. Unidirectional microphone design helps collect words more effectively and clearly.

Light weight and compact design. S278UHF original voice amplifier is only 4.5 * 3.5 * 1.3 inches and 0.44 lbs.

Rechargeable voice amplifier lasts a long time (10~12 hours); wireless headset microphone lasts 3~5 hours. The equipped 2 in 1 multiple USB cable and 5V charger make charging very convenient. Only needs 3~5 hours to fully charge them.

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