does it have selectable channel

No it comes with a default channel already and you can't change the channel.

What the frequency that the microfone Works at. i Will use in Brazil

The mic frequency will automatically adjust itself. No need to look for the right frequency.

I need to buy 5. Can they all be different frequencies?

I believe so. I have 2 operating without problem at the same location. I do not recall a frequency adjustment so it must be automatic. There may be an upper count limit. Ask the manufacturer.

Can three single wms40 mini vocal set be operate at the same time without conflicts frequency or channel?

As long as they are all different ABCD bands of this model. I have three for my wedding DJ setup and I run ABC bands with absolutely no interference. Have been doing this for about 3 years now. No dropouts up to about 100 feet line of sight and no failures yet. I even have to AKG's from 20 years ago I use as well if needed for lavalier applications that still work perfectly. Big AKG fan here.

AKG Pro Audio WMS40MINI Vocal Set BD US25C Wireless Microphone System

AKG Pro Audio WMS40MINI Vocal Set BD US25C Wireless Microphone System

Product ID: 561780762

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Details

Brand
AKG
Connectivity Technology
Wireless
Connector Type
6.35 mm Jack
Model Name
WMS40MINI Set
Recommended Uses For Product
Karaoke

🎤Dynamic cardioid capsule

📡Ultra-compact wireless receiver

🔋30-hour battery life

Description

🎤 Own the stage with wireless freedom and crystal-clear sound!

PLUG PLAY SIMPLICITY - Ultra-compact receiver with 1/4" jack output makes setup effortless—just connect and perform.
ENDLESS PERFORMANCE POWER - Up to 30 hours of uninterrupted wireless audio on a single AA battery—stay live longer without the hassle.
GLOBAL READY POWER SUPPLY - Includes universal adapter compatible with EU/UK/US/AU outlets—perfect for the jet-setting professional.
SLEEK PROFESSIONAL DESIGN - Compact, black crystal enclosure blends seamlessly into any stage or studio environment.
CRYSTAL CLEAR VOCAL PRECISION - Dynamic cardioid microphone capsule ensures maximum gain before feedback for flawless sound clarity.

The AKG Pro Audio WMS40MINI Vocal Set BD US25C is a professional-grade wireless microphone system featuring a dynamic cardioid handheld transmitter and an ultra-compact receiver. Designed for seamless plug-and-play use, it delivers up to 30 hours of battery life on a single AA battery and includes a universal power supply compatible worldwide. Ideal for karaoke and live performances, it offers crystal-clear sound with minimal feedback, making it a must-have for millennial pros seeking reliable, high-quality wireless audio.

Specifications

ASIN	B01IHISZ80
Antenna Location	Karaoke
Audible Noise	85 Decibels
Box Contents	Receiver, Transmitter
Brand	AKG
Brand Name	AKG
Colour	Black
Compatible Devices	Amplifier
Connectivity Technology	Wireless
Connector Type	6.35 mm Jack
Customer Reviews	3.9 out of 5 stars 160 Reviews
Enclosure Material	Crystal
Frequency Range	20 hz 20 khz
Frequency Response	20 KHz
Global Trade Identification Number	00885038038993
Hardware Platform	Karaoke Machine
Impedance Unit of Measure	600 Ohms
Item Dimensions	28.7 x 23.8 x 5.9 Centimeters
Item Type Name	Wireless Microphone System
Manufacturer	AKG
Manufacturer Part Number	3347X00130
Microphone Form Factor	Handheld
Model Name	WMS40MINI Vocal Set BD US25C
Model Number	3347X00130
Number of Batteries	1 AA batteries required. (included)
Number of Channels	1
Polar Pattern	Unidirectional
Power Source	Battery Powered
Recommended Uses For Product	Karaoke
Signal-to-Noise Ratio	85 dB
Special Feature	Wireless
UPC	885038038993 750408396488
Unit Count	1.0 Count

Reviews

B**A

Schalter defekt

Nach 2 Jahren funktioniert der On-Off Schiebeschalter nicht mehr.

20.03.2026

V**R

Recommend it.

18.01.2026

D**K

Calidad, precio, be

Mi tercer micrófono AKG, sugiero compren en serie A-B-C para no tener interferencias. Tienen una gran calidad de audio al mejor costo y ahorro de batería, el alcance es suficiente para eventos en áreas cerradas. Lo recomiendo mil veces a marcas desconocidas del mismo costo.

27.07.2025

A**S

El mejor calidad/precio!

No lo dudes, funciona exelente! Muy buen alcance. Funciona con una sola pila.

24.01.2026

C**N

No sirve.

No sirven estas marcas. Se prende el led rojo y genera un ruido espantoso.

20.09.2024

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