--- product_id: 120904229 title: "SV 40W Portable Voice Amplifier with Microphones - Wired Handheld & Headset Mic Included for Teachers, Instructors, Tour Guides, Outdoor Events" brand: "gigaphone" price: "Β₯58442" currency: JPY in_stock: true reviews_count: 13 category: "Gigaphone" url: https://www.desertcart.jp/products/120904229-sv-40w-portable-voice-amplifier-with-microphones-wired-handheld-headset store_origin: JP region: Japan --- # Dual high-sensitivity mics 40W powerhouse output 3.5mm aux multimedia hub SV 40W Portable Voice Amplifier with Microphones - Wired Handheld & Headset Mic Included for Teachers, Instructors, Tour Guides, Outdoor Events **Brand:** gigaphone **Price:** Β₯58442 **Availability:** βœ… In Stock ## Summary > πŸŽ™οΈ Own the stage, wherever you go! ## Quick Answers - **What is this?** SV 40W Portable Voice Amplifier with Microphones - Wired Handheld & Headset Mic Included for Teachers, Instructors, Tour Guides, Outdoor Events by gigaphone - **How much does it cost?** Β₯58442 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/120904229-sv-40w-portable-voice-amplifier-with-microphones-wired-handheld-headset) ## Best For - gigaphone enthusiasts ## Why This Product - Trusted gigaphone brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Command Every Room:** 40W output projects your voice clearly to 100+ peopleβ€”no strain, all impact. - β€’ **Dual Mic Flexibility:** Switch effortlessly between handheld and headset mics for any professional setting. - β€’ **Korean Sound Mastery:** 28 years of audio innovation ensures crystal-clear, feedback-free sound. - β€’ **Ultra-Light & Portable:** Compact 10.4 oz design fits your on-the-go lifestyle without weighing you down. - β€’ **Plug & Play Versatility:** Seamlessly connect smartphones or laptops to mix speech with background audio. ## Overview The SV 40W Portable Voice Amplifier delivers professional-grade 40-watt sound output with dual microphones and seamless 3.5mm connectivity. Engineered by South Korea's top brand with 28 years of expertise, it offers crystal-clear, feedback-free audio for teachers, trainers, and presenters. Lightweight and battery-powered, it’s the ultimate portable PA system for commanding any audience. ## Description Product description Review: LOUD, excellent interface, user-replaceable batteries. Worth the cost. - After using a cheap $25 voice amplifier for teaching all last year (outdoors in noisy environments), I wanted to upgrade to something louder. While the cheap amplifiers were definitely better than nothing, there were times when environmental noise would overpower my voice. So I decided to test two higher end amplifiers available on desertcart - the Gigaphone 40 watt, and the Shidu 30 watt. After spending some time with both, I'm sending the Shidu back and buying a second Gigaphone. Here's why: The Gigaphone is significantly louder than the Shidu. I couldn't get a quantitative measurement because my phone sound meter only goes up to 80ish decibels, but it was loud enough to max out my phone's meter. Qualitatively, to my ear they sounded equally loud with the Shidu at max volume and the Gigaphone about half volume. Sound quality with the Gigaphone is acceptable at max volume, but it can be difficult to avoid feedback, squawking, and ringing. Adjusting it just a touch under max volume seemed to be a good compromise, and was plenty loud (still much louder than the Shidu). The Gigaphone did a better job of amplifying the higher frequencies of my voice, which made speech easier to understand. The Shidu had an overall more pleasant sound, and was richer in the lower frequencies, but I felt that less amplification of the high frequency "S" sounds made the speech harder to understand. If I were playing music or prioritized vocal quality over loudness, I might favor the Shidu's more balanced sound, but the Gigaphone is better for straight up understandable speech. The Gigaphone has a better user interface, with a simple, quick power button and volume knob. It's also quick to boot up. The Shidu requires different combinations of long and short button presses to perform basic functions, which is annoying, and takes a while to turn on. The Gigaphone is smaller and lighter. As I'll be wearing it for hours at a time, this is important for me. This version of the Gigaphone does not have wireless capability. Not an issue for me - I prefer wired headsets for the reliability and battery life. The Shidu does have wireless, if that's a feature you need. The Gigaphone has a user replaceable battery. That means it has a longer lifespan, which is important in an expensive product. If it starts to lose capacity over time, it's simple to just open up the battery compartment and swap out the battery for a new one. The Shidu does not appear to have a replaceable battery. Overall, I felt they were both good products. The Gigaphone is better for my specific goal (making speech as loud and understandable as possible). Review: Gigaphone SV 40W Portable Voice Amplifier with Mic - Excellent Product. Was needing to replace an old amplifier that was 25 watts with something more powerful. I do street preaching outside along busy and loud intersections and I need something that is going to stand up to traffic noise. So here is my observation from using it: It is super simple to turn off and on. Volume knob shows how hi u have it turned up, which even half way is plenty loud,. Clarity is crisp and clear, no need to raise my voice loudly as with old 25 watt amp. I can talk without straining my voice which is a super big deal for me since I do this a couple of times a week. It has a sturdy adjustable shoulder strap and also comes with a clip should u decide to wear it attached to your belt or pants. Also I love the fact that this product shows how much of a charge u have used and what is left in battery life,... unlike my old amp, which I never knew how much battery charge I had left. I would have given this product a 5 star except for the fact I am not crazy about the headset. If I wear the head set on top of my hat it seems to fit and hold tightly and won't slip or slide around on my head. But if u r wearing on top of your hair or around the ears, you may find it loosely fitted and the mic may not stay in front of your mouth where u want it. Overall, it is an excellent product and absolutely delivers what it says. I would definitely recommend it. (It did not come with any instructions or a carrying case. It did also come with a good hand-held microphone. Both headset and hand-held microphone are plug-in only.) ## Features - POWERFUL 40W CRYSTAL-CLEAR VOICE – Projects strong, distortion-free sound to over 100 people clearly, even in noisy outdoor environments. No more straining your voice β€” be heard from the front row to the very back, every time. - RELIABLE WIRED CONNECTION – ZERO SIGNAL DROPOUT – Stable wired microphone connection ensures consistent, crystal-clear sound with absolutely no interference or signal loss. Simple plug-and-play setup β€” just connect and start speaking instantly. - 2 MICROPHONE TYPES INCLUDED – Choose between a Wired Handheld or Headset microphone to match your teaching or presenting style. Both deliver high-sensitivity sound pickup for crystal-clear voice amplification β€” ready to use right out of the box. - LIGHTWEIGHT & PORTABLE WITH ALL-DAY COMFORT – Compact design with included belt clip and shoulder strap lets you wear it hands-free all day. AUX IN connectivity lets you connect smartphones or laptops to play background music or audio while you speak. - KOREA'S NO.1 VOICE AMPLIFIER BRAND – GIGAPHONE is trusted by teachers, tour guides, fitness instructors, corporate trainers, and educators worldwide. Up to 10 hours of battery life keeps you powered through a full day without interruption. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07P1WH3W3 | | Antenna Location | Teachers & Classroom, Tour Guides, Public Speaking, Fitness Coaches, Yoga Instructors, Elderly Communication Aid, Outdoor Events | | Audio Input | Microphone, Auxiliary | | Best Sellers Rank | #37,911 in Musical Instruments ( See Top 100 in Musical Instruments ) #313 in PA Systems | | Brand | gigaphone | | Built-In Media | headset microphone, hand microphone, AC adapter, belt clip, shoulder strap | | Color | Premium Navy Blue | | Compatible Devices | Smartphone, Laptop, Tablet | | Connectivity Technology | Wired | | Connector Type | Aux | | Customer Reviews | 4.2 out of 5 stars 109 Reviews | | Enclosure Material | High-Impact ABS (Military-Grade Durability) | | Frequency Response | 2020000 Hz | | Impedance | 4 Ohms | | Item Dimensions | 3.5 x 1.69 x 4.53 inches | | Item Weight | 10.4 ounces | | Item dimensions L x W x H | 3.5 x 1.69 x 4.53 inches | | Manufacturer | JUNSUNGTECH | | Mfr Part Number | Outdoor SV | | Model Number | GIGAPHONE-SV | | Mounting Type | Belt Clip, Shoulder Strap | | Number of Channels | 1 | | Output Wattage | 40 Watts | | Power Source | Battery Powered | ## Product Details - **Brand:** gigaphone - **Color:** Premium Navy Blue - **Compatible Devices:** Smartphone, Laptop, Tablet - **Connectivity Technology:** Wired - **Item dimensions L x W x H:** 3.5 x 4.52 x 1.69 inches ## Images ![SV 40W Portable Voice Amplifier with Microphones - Wired Handheld & Headset Mic Included for Teachers, Instructors, Tour Guides, Outdoor Events - Image 1](https://m.media-amazon.com/images/I/713Tc7wQXlL.jpg) ![SV 40W Portable Voice Amplifier with Microphones - Wired Handheld & Headset Mic Included for Teachers, Instructors, Tour Guides, Outdoor Events - Image 2](https://m.media-amazon.com/images/I/71fxueXm1sL.jpg) ![SV 40W Portable Voice Amplifier with Microphones - Wired Handheld & Headset Mic Included for Teachers, Instructors, Tour Guides, Outdoor Events - Image 3](https://m.media-amazon.com/images/I/71cpM7fWYXL.jpg) ![SV 40W Portable Voice Amplifier with Microphones - Wired Handheld & Headset Mic Included for Teachers, Instructors, Tour Guides, Outdoor Events - Image 4](https://m.media-amazon.com/images/I/81VBaZwqAYL.jpg) ![SV 40W Portable Voice Amplifier with Microphones - Wired Handheld & Headset Mic Included for Teachers, Instructors, Tour Guides, Outdoor Events - Image 5](https://m.media-amazon.com/images/I/71vD0hA2VBL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ LOUD, excellent interface, user-replaceable batteries. Worth the cost. *by A***R on February 8, 2023* After using a cheap $25 voice amplifier for teaching all last year (outdoors in noisy environments), I wanted to upgrade to something louder. While the cheap amplifiers were definitely better than nothing, there were times when environmental noise would overpower my voice. So I decided to test two higher end amplifiers available on Amazon - the Gigaphone 40 watt, and the Shidu 30 watt. After spending some time with both, I'm sending the Shidu back and buying a second Gigaphone. Here's why: The Gigaphone is significantly louder than the Shidu. I couldn't get a quantitative measurement because my phone sound meter only goes up to 80ish decibels, but it was loud enough to max out my phone's meter. Qualitatively, to my ear they sounded equally loud with the Shidu at max volume and the Gigaphone about half volume. Sound quality with the Gigaphone is acceptable at max volume, but it can be difficult to avoid feedback, squawking, and ringing. Adjusting it just a touch under max volume seemed to be a good compromise, and was plenty loud (still much louder than the Shidu). The Gigaphone did a better job of amplifying the higher frequencies of my voice, which made speech easier to understand. The Shidu had an overall more pleasant sound, and was richer in the lower frequencies, but I felt that less amplification of the high frequency "S" sounds made the speech harder to understand. If I were playing music or prioritized vocal quality over loudness, I might favor the Shidu's more balanced sound, but the Gigaphone is better for straight up understandable speech. The Gigaphone has a better user interface, with a simple, quick power button and volume knob. It's also quick to boot up. The Shidu requires different combinations of long and short button presses to perform basic functions, which is annoying, and takes a while to turn on. The Gigaphone is smaller and lighter. As I'll be wearing it for hours at a time, this is important for me. This version of the Gigaphone does not have wireless capability. Not an issue for me - I prefer wired headsets for the reliability and battery life. The Shidu does have wireless, if that's a feature you need. The Gigaphone has a user replaceable battery. That means it has a longer lifespan, which is important in an expensive product. If it starts to lose capacity over time, it's simple to just open up the battery compartment and swap out the battery for a new one. The Shidu does not appear to have a replaceable battery. Overall, I felt they were both good products. The Gigaphone is better for my specific goal (making speech as loud and understandable as possible). ### ⭐⭐⭐⭐ Gigaphone SV 40W Portable Voice Amplifier with Mic *by K***T on October 23, 2024* Excellent Product. Was needing to replace an old amplifier that was 25 watts with something more powerful. I do street preaching outside along busy and loud intersections and I need something that is going to stand up to traffic noise. So here is my observation from using it: It is super simple to turn off and on. Volume knob shows how hi u have it turned up, which even half way is plenty loud,. Clarity is crisp and clear, no need to raise my voice loudly as with old 25 watt amp. I can talk without straining my voice which is a super big deal for me since I do this a couple of times a week. It has a sturdy adjustable shoulder strap and also comes with a clip should u decide to wear it attached to your belt or pants. Also I love the fact that this product shows how much of a charge u have used and what is left in battery life,... unlike my old amp, which I never knew how much battery charge I had left. I would have given this product a 5 star except for the fact I am not crazy about the headset. If I wear the head set on top of my hat it seems to fit and hold tightly and won't slip or slide around on my head. But if u r wearing on top of your hair or around the ears, you may find it loosely fitted and the mic may not stay in front of your mouth where u want it. Overall, it is an excellent product and absolutely delivers what it says. I would definitely recommend it. (It did not come with any instructions or a carrying case. It did also come with a good hand-held microphone. Both headset and hand-held microphone are plug-in only.) ### ⭐⭐⭐⭐⭐ Nice and loud! Best out there! *by T***E on October 6, 2023* This does what it is supposed to do. Amplifies your voice loud and clear. Don't use it with wireless mics though, because it gives off crazy feedback when you are any where near the speaker. I hate that part about it because I wanted to use it with wireless mics. I felt it looks dorky hanging it around my neck with the Brittany spears head mic on. But when you turn up the wireless mic, it produces such feedback it is never clear sounding unless you are far from the speaker AND, have the volume rather low. That's a bad downside for me. I still use it... Just have to keep the speaker at a much lower volume. Which almost defeats the purpose. Oh how I wish the wireless mic worked with this without giving feedback when you're close to the speaker or have the volume up. But there's nothing I can do about that. Recently I just decided to use the microphones that came with it. When you're using the Britney Spears over the head mic, This little bad boy works very very well. Your voice would definitely be amplified. You can hang the speaker off of your belt or clip it to your pocket. But your voice is very much amplified. Loud and clear. I would say this voice amplifier is well worth the money! There are others out there that amplify your voice. But this really really amplifies your voice! This makes the other ones seem like little baby brothers and this one being their strong father. ## Frequently Bought Together - GIGAPHONE SV 40W Portable Voice Amplifier with Microphones - Bietrun Wireless Microphone Headset, UHF Wireless Headset Mic System, 160ft Range,1/8'' and 1/4'' Plug, for Speakers, Voice Amplifier, PA System(Not Supported AUX/iOS) - Portable Voice Amplifier, Giecy 30W 2800mAh Bluetooth Rechargeable Personal Voice Amplifier with Microphone Headset, PA System Speaker for Multiple Locations Classroom, Meetings and Outdoors --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/120904229-sv-40w-portable-voice-amplifier-with-microphones-wired-handheld-headset](https://www.desertcart.jp/products/120904229-sv-40w-portable-voice-amplifier-with-microphones-wired-handheld-headset) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-06-07*