why my voice is echoing when it comes out of the amplifier? I tried to adjuct the microphone and it didn't work. the classroom for 100 students.

Try adjusting the reverb knob and keep the mic farther away from the speaker. It may also help to keep speaker slightly in front of the mic to prevent the echoing.... Similar to bands on stage. The amplifiers/speakers are closer to the audience to prevent sound feedback or distortion.

Can you speak through the microphone and play a recording from tf (micro sd) or usb flash drive at the same time?

Yes, you may speak and play a recording from tf/usb flash drive, we thought people may use it to sing a song with the music in the tf/usb flash drive. enjoy it!

In a smaller room will this give us feed back?

I use it in an average size classroom with very minimal feedback and only sporadically

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Voice Amplifier Personal Voice Amplifier, Portable Voice Amplifier 30W 2800mAh Rechargeable PA System Speaker for Multiple Locations Classroom, Meetings and Outdoors

Product ID: 379874308

Details

Brand
Giecy
Colour
Wired Voice
Compatible devices
TF (Micro SD)
Connectivity technology
Bluetooth
Item dimensions L x W x H
8.2 x 3.2 x

📡Bluetooth range 33ft

🔊30W powerful output

🔋2800mAh rechargeable battery

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Description

🎤 Own the room, wherever you go!

SEAMLESS BLUETOOTH STREAMING - Wirelessly connect and play your favorite tunes up to 33 feet away—work and vibe simultaneously.
VERSATILE CONNECTIVITY OPTIONS - Supports TF card, USB flash drive, AUX input, and wired microphone for ultimate flexibility.
ALL DAY POWER ZERO INTERRUPTIONS - Rechargeable 2800mAh battery delivers 12-15 hours of amplification or 8 hours of music playback on a single charge.
AMPLIFY YOUR VOICE SAVE YOUR THROAT - 30W crystal-clear sound covers up to 20,000 sq.ft, perfect for large rooms & outdoor events.
DESIGNED FOR PROFESSIONALS ON THE MOVE - Lightweight, portable, with an adjustable strap and headset mic—ideal for teachers, speakers, and event hosts.

The Giecy G300A Voice Amplifier is a portable 30W PA system designed for professionals needing clear, powerful voice projection across large spaces. Featuring Bluetooth streaming, multiple audio inputs, and a rechargeable 2800mAh battery offering up to 15 hours of use, it’s perfect for classrooms, meetings, and outdoor events. Lightweight and equipped with a headset mic, it ensures comfort and versatility for all-day speaking engagements.

Specifications

ASIN	B07PRF5WKB
Antenna Location	classrooms, outdoor events, meetings
Audio Input	AUX, TF (Micro SD) card, USB flash drive
Brand	Giecy
Built-In Media	1xAC-DC Charger 1xAdjustable Strap 1xQuick Start Guide 1xWired Microphone Headset 1xVoice Amplifier
Color	Wired Microphone Voice Amplifier
Compatible Devices	TF (Micro SD) card, USB flash drive, Bluetooth-enabled mobile device
Connectivity Technology	Bluetooth
Connector Type	XLR
Customer Reviews	4.3 4.3 out of 5 stars (1,446)
Enclosure Material	Plastic
Frequency Response	13 KHz
Global Trade Identification Number	00767311321766
Impedance	4 Ohms
Item Dimensions	8.2 x 3.2 x 10.1 centimeters
Item Weight	0.5 Kilograms
Manufacturer	Giecy
Mfr Part Number	G300A
Model Number	G300A
Mounting Type	Tabletop
Number of Channels	1
Output Wattage	30 Watts
Power Source	Battery Powered
UPC	767311321766

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P2183

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Sold byAmazon BotswanaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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