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🎤 Own the room, save your voice, and never miss a beat!
The SHIDU Voice Amplifier SD-258 is a compact, portable PA system delivering powerful 10W sound coverage for up to 120 people or 11,800 sq.ft. Equipped with a rechargeable 1800mAh battery, it offers up to 12 hours of continuous use. Its lightweight design with a detachable clip ensures easy portability, while versatile audio inputs (USB, Micro SD, AUX) enable music playback alongside voice amplification. Ideal for teachers, coaches, tour guides, and fitness instructors seeking clear, distortion-free sound and throat-saving performance.












| ASIN | B07FLV88J8 |
| Audio Input | USB, Micro SD, AUX |
| Battery Type | Lithium-Ion (Li-ion) |
| Best Sellers Rank | #224 in Musical Instruments ( See Top 100 in Musical Instruments ) #2 in Power Amplifiers #86 in Portable Audio & Video |
| Brand | SHIDU |
| Color | Black |
| Compatible Devices | Guitar, Headset |
| Connectivity Technology | USB |
| Connector Type | USB; 3.5mm Jack |
| Customer Reviews | 4.3 out of 5 stars 4,166 Reviews |
| Enclosure Material | Acrylonitrile Butadiene Styrene (ABS) |
| Item Dimensions | 3.35 x 1.57 x 4.13 inches |
| Item Weight | 5.74 ounces |
| Item dimensions L x W x H | 3.35 x 1.57 x 4.13 inches |
| Manufacturer | SHIDU |
| Mfr Part Number | S258 |
| Model Number | S258 |
| Mounting Type | Portable |
| Number of Channels | 1 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Output Wattage | 10 watts |
| Power Source | Battery Powered |
| UPC | 759675088331 |
| Unit Count | 1 Count |
E**Y
Awesome
I love it ! Easy to use , volume was pretty loud , overall great quality
J**N
Good portable amplifier
Works quite well. I ordered to use at an outdoor yoga class and it did just what I needed. If needing to cover a larger area or group outside, might need something with a bigger speaker but for small groups outside or larger areas inside, it's really good. Shoulder strap is really handy.
D**K
Great product for an affordable price
I love this sound system overall, but my only problem is that my package was delivered, yet it went to the wrong address in my apartment building. On the day my package was delivered, it was for another apartment building nearby. I thought that the delivery man swapped my package for the address on the package I was given, but I was mistaken. When I went to return the package to the right address, my package was not there either. Fast forward a few days later, one of the residents of the building knocked on my door. She said that my package was delivered to her address by mistake, but at least I finally got my package. It was probably a mix up when the delivery man was making rounds to deliver mail, but stuff happens. The product was not damaged when I received it, and taking it out of the box. The sound was clear, and loud enough to be heard from a 50 mile radius, overall I'm satisfied with the product. But the delivery part of my package I'm not satisfied with, it could've been better. I'm just happy I finally got my package.
A**R
Purposeful
This is very useful while doing my ministry. Very portable . It’s very light and it serves its purpose. Sound is very good.
A**R
A must for any teacher
This amplifier has saved me from losing my voice. Being a music teacher during this pandemic, I have to be heard over elementary school kids and instruments while wearing a KN95 mask. I was going home every day with almost no voice from yelling. This amplifier stopped that. I can now talk at a normal level and my students can hear me no matter where I stand in the room. Since using this, my students now hear me clearly and have stopped asking me to repeat myself constantly. The headset is light and doesn’t pinch me at all. I can also wear it around my neck if I don’t want to put it on my head. The belt clip on the speaker is the best! I clip it onto my pocket and it is out of the way when I am demonstrating instruments and whatnot. I would highly recommend this product for all teachers and anyone who has to do any speaking in front of many people while wearing a mask.
A**R
Perfect for teachers
I had two students with auditory processing and were given fm systems as accommodations in the past. I found that my entire class benefitted from the voice amplification but didn’t think I’d find anything reasonably priced as the ones they were given by our school district were upwards of thousands of dollars. I ordered this last week and it arrived quickly (though not in the time frame promised by prime which was a bummer). I was able to use it today for the first time and it was incredible. My students loved it and I could whisper and they could still hear me. I am also planning on allowing my students to use it when they are presenting. Some of them speak so softly (third grade) that we have trouble hearing them and I’m hoping this will help boost their confidence. I was very surprised by the voice quality for a $30 item. I have my fingers crossed the quality holds up and will update my review if needed. But after my first run with it, I love it!
J**C
Sound quality is meh, but it works
It's both really sensitive and the speaker sounds low-quality with only a focus on mids (it sounds tinny), but it works. It is simple enough in that setting the volume to 0 turns off the unit, and vice versa for anything else. It's very light, to the point of me being surprised that it has an embedded, USB-C-rechargeable battery.
V**S
Perfect for small/medium size rooms
Love it
W**T
Great
Great and very easy to use
M**T
Good little mini amplifier!
I have been giving this one a go, as I have been making a few presentations for some classes, and the thing I noticed was that I couldn’t be sure if all people could hear me clearly, so my voice was going unnaturally high. Then I ordered this genius thing, and it is working. And that incredibly well, especially considering it was a relatively reasonable price for it. All 15 people heard me well, and they found it easy to hear every single word, and I spoke just as if they were next to me - and the amplifier did the rest for me. My voice was good and strong even as I spoke an hour continuously. I also noticed that I was absolutely taken for being a bit extra professional as well. I can happily recommend this for a classroom or some bigger birthday parties with speeches- and everywhere you need a group of people to listen to you easily even over some distance. It seems to be well built and of acceptable quality too. So I can surely recommend it to all that speak in front of people and want to save their voices. It truly does!
M**A
Good product, would recommend it 👌
I have to say, I'm extremely happy with this purchase so far. I haven't even charged the product since I bought it and it's lasted me over a week and it's still good to use. I'm a teacher so I use it for my classes but not the entire period, I turn it off when I don't need it. My students really like that they can hear me loud and clear. My colleagues loved it so much that a handful of them bought one for themselves. 😅 Overall, I definitely recommend it 👌 Good price, good quality and really helps with reducing vocal strain.
S**.
Stopped working in less than 2 Weeks
I purchased this voice amplifier after my ENT specialist recommended using one to help minimize strain on my vocal cords while instructing. Initially, I would have happily given this product a 5-star review. My voice came through clearly, the volume was excellent, and the unit itself is lightweight, comfortable, and very easy to use. It was exactly what I needed. Unfortunately, after taking it off the charger last night, the unit has completely stopped working. I have tried different charging cables and ports, but the blue charging light no longer comes on and the device will not power on. Given that I have only recently received the product, I’m extremely disappointed that it has stopped working so quickly. This was not an inexpensive purchase, and I also waited quite some time for it to arrive. I’m hoping the seller will be willing to replace the defective unit, as I genuinely liked the product and was very happy with its performance before this issue occurred. I specifically purchased it for medical reasons and rely on it throughout my day, so I would greatly appreciate some support.
F**A
Fallas en el dispositivo
No tengo ni 5 meses con él y ya falló el micrófono.
Trustpilot
1 week ago
3 weeks ago