innopow WM-400 4-Channel Wireless Microphone System

1 / 6

Product guide

innopow WM-400 4-Channel Wireless Microphone System

The innopow WM-400 is a four-channel wireless microphone system supplied with four handheld microphones and a receiver. Individual channel volume controls and multiple output options are listed, but it uses fixed frequencies and requires an amplifier and speaker setup for sound output.

At a glance

Four handheld microphones are paired with a receiver for a four-channel setup.
Individual volume control is listed for each channel.
The feature listing specifies two individual XLR outputs and one mixed 6.35 mm output.
The listed 150–200 ft range applies to a wide-open area, and battery life is stated as 14–17 hours.

Price

$179.09Save 10%

Reference price: ~~$198.99~~

Price checked: Nov 12, 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

Mudder 5 Pack Foam Mic Cover Handheld Microphone Windscreen (5 Pack) | Fits Handheld Mics, Microphone Pop Filter,Microphone Muffler,Foam Microphone Cover, Snug Fit Ball Shape

$7.99

EBXYA 3ft XLR Cables 4-Pack - Male to Female Microphone Cable | with Balanced Shielded Speaker Cable for Mic, Mixer, Speaker Systems, Radio Station and Podcast

$19.19

Pros and cons

Pros

Four handheld microphones make the system suitable for group singing or multi-person announcements.
Individual channel volume controls allow separate level adjustment for each microphone.
The stated output choices include individual XLR connections and a mixed 6.35 mm connection.

Cons

Fixed-frequency operation limits using multiple WM-400 units together at the same place and time.
The system is not self-contained for playback and requires an amplifier and speaker.

Technical specifications

19 specifications

Identity
Brand	innopow
Model	WM-400

System and controls
Channels	4
Microphone form factor	Handheld
Polar pattern	Unidirectional
Microphone cartridge	Unidirectional neodymium dynamic cartridge
Microphone enclosure material	Metal
Controls	Volume Control

Connectivity and outputs
Wireless connection listed	XLR
Outputs described	Extra Two XLR individual outputs and one 6.35mm Mixed output

Power and battery
Power configuration	Battery Powered
Batteries required	4 AA batteries required. (included)
Battery life claim	Battery Life:14-17 Hours.

Performance claims
Working range claim	Working Range in wide-open area:150-200 Ft.
Signal-to-noise ratio	70 db

Compatibility and use
Compatible devices listed	Personal Computer, Smartphone, Speaker
Recommended uses	Karaoke, Singing
Hardware platform listed	Karaoke Machine

Dimensions and installation
Weight listed	3.99 kg

What to know before buying

Listing details to confirm

The listing describes the unit as fixed-frequency and says multiple units cannot operate simultaneously, while its device compatibility field lists a personal computer and smartphone but setup guidance says a computer may need a USB interface or USB-output mixer. Confirm the intended connections and output configuration for your equipment. The stated range is for a wide-open area, not a universal operating distance.

What’s in the box

Included

1/4-inch audio cable
2 antennas
4 handheld microphones
Power adapter
Wireless receiver

Who is it for?

A good fit for

Karaoke groups needing four handheld microphones and individual channel volume adjustments.
Churches, small stages, parties or classrooms with a separate amplifier and speaker system.

Less suited to

Users who need multiple wireless systems running together at the same venue.
Buyers seeking a microphone set that directly provides amplified sound or connects to a laptop without additional interface equipment.

innopow WM-400 4-Channel Wireless Microphone System · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 506 ratings

5 stars80%80%
4 stars13%13%
3 stars3%3%
2 stars1%1%
1 star3%3%

Customer feedback highlights favorable reports about sound quality, battery life and functionality, with some describing performance at distances beyond the listing's stated open-area range. Others report mixed experiences with interference and durability. For buyers, those reports suggest generally positive experiences but do not establish dependable range or reliability. The system's fixed-frequency limitation and need for external amplification remain important practical considerations.

Positive themes

Customer feedback describes sound quality and battery life favorably.
Some customers report effective operation at distances beyond the stated open-area range.

Mixed feedback

Feedback on build quality and durability is mixed, with both positive impressions and durability concerns reported.
Interference is also described as a mixed experience.

Frequently asked questions

Can multiple WM-400 systems operate at the same time?

The listing says the system uses fixed frequencies and that multiple units cannot be used simultaneously at the same place.

Does the system include a speaker or amplifier?

No speaker or amplifier is listed as included. The supplied guidance says an amplifier is needed to drive a speaker.

Can it connect directly to a laptop?

The listing says a laptop connection may require a USB interface or a mixer with USB output, despite also listing a personal computer as a compatible device.

What operating range and battery life are claimed?

The manufacturer claim gives 150–200 ft in a wide-open area and 14–17 hours of battery life. These are listing claims, not guaranteed results.