How can i huy just the microphones?

You can buy them from GTD Audio. Go to gtdaudio.net and search for 787

What kind of rechargeable batteries can you use in this unit, they can be used because I try Duracell but they are a little fat and someone broke one.

** DO NOT DO NOT ** Use rechargeable batteries in microphones (or any device) that uses standard batteries!! Standard batteries are 1.5volts. Rechargeable are 1.2 volts. So if you microphone uses two batteries, it is working with 3 volts. However, if you are using rechargeable batteries, you are only giving it 2.4 volts which means it may have reduced range and cause other problems, as 2.4 volts is like weak regular batteries. When someone like Shure provides a rechargeable battery pack option, the pack is actually containing THREE batteries in the pack - even though it fits into a two battery compartment thereby providing 3.6 volts for a 3 volt device. Again... you will have many problems if you try to use rechargeable batteries in a device like this!!

Does this system have echo cancellation built in? (to avoid ringing / resonance)?

It does not and these mics are fairly susceptible to feedback, however you can usually eq the rings out just fine or use the gain control on the receiver to decrease the sensitivity.

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GTDaudio 4x800 Adjustable Channels UHF Diversity Wireless Cordless Handheld Microphone Mic System Ideal for Church, Karaoke, Dj Party, Range 450ft (4 Handheld Mics)

GTDaudio 4x800 Adjustable Channels UHF Diversity Wireless Cordless Handheld Microphone Mic System Ideal for Church, Karaoke, Dj Party, Range 450ft (4 Handheld Mics)

Product ID: 92847119

Details

Brand
GTDaudio
Color
Black Silver
Compatible Devices
Headphone
Connectivity Technology
UHF
Connector Type
XLR
Included Components
microphone

📏450ft wireless range

📡True diversity tech for max range

📶800 selectable frequencies/channel

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HK$4240

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Description

🎤 Own the stage with wireless freedom and flawless sound!

PRO GRADE RANGE - Up to 450 feet of wireless freedom means no limits on stage or event space—command the room with confidence.
DROPOUT NOT HERE - True diversity operation ensures crystal-clear sound and rock-solid connection even in crowded venues.
AUTO TUNE YOUR SETUP - Automatic frequency scanning and transmitter sync make setup effortless—focus on your performance, not tech hassles.
BUILT TO PERFORM LAST - Rugged metal build paired with 120dB signal-to-noise ratio delivers professional-grade audio clarity every time.
SEAMLESS MULTI MIC MASTERY - 4 handheld mics with 800 frequency options each—run up to 20 sets simultaneously without interference.

The GTDaudio G-787 wireless microphone system features 4 handheld mics with 800 selectable UHF frequencies per channel, true diversity technology for reliable signal over 450 feet, and automatic frequency scanning for interference-free operation. Designed for professional events like church services, karaoke, and DJ parties, it combines rugged metal construction with easy setup and superior audio clarity.

Specifications

ASIN	B07KRMX7VH
Antenna Location	Karaoke, Singing
Audible Noise	120 Decibels
Audio Sensitivity	85 Decibels
Best Sellers Rank	#9,713 in Musical Instruments ( See Top 100 in Musical Instruments ) #140 in Handheld Wireless Microphones & Systems
Brand	GTDaudio
Built-In Media	microphone
Color	Black, Silver
Compatible Devices	Headphone
Connectivity Technology	UHF
Connector Type	XLR
Customer Reviews	4.4 4.4 out of 5 stars (486)
Enclosure Material	Metal
Frequency Response	590 MHz
Hardware Platform	Karaoke Machine
Item Dimensions	17 x 7 x 2 inches
Manufacturer	GTD Audio Inc
Mfr Part Number	G 787
Microphone Form Factor	microphone system
Model Name	G-787H
Model Number	G 787
Number of Channels	4
Polar Pattern	Omnidirectional
Power Source	Battery Powered
Signal-to-Noise Ratio	120 dB
Special Feature	Wireless
UPC	854318007356
Unit Count	1 Count

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HK$4240

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

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