Harmonai MR40 UHF Quad-Handheld Wireless Microphone System image 1

Harmonai MR40 UHF Quad-Handheld Wireless Microphone System — Professional Conference, Performance & Presentation Audio

The Harmonai MR40 is a UHF 640–690 MHz quad-handheld wireless microphone system supporting four simultaneous channels with up to 100 m range. Featuring -94 dBm sensitivity, >105 dB...

$142.90

Model: MR40
Category: Microphones
Images: 4 images
Status: ready

Product Brief

Harmonai MR40 UHF Quad-Handheld Wireless Microphone System — Professional Conference, Performance & Presentation Audio

Overview

The Harmonai MR40 is a UHF 640–690 MHz quad-handheld wireless microphone system supporting four simultaneous channels with up to 100 m range. Featuring -94 dBm sensitivity, >105 dB...

Price: $142.90
Model: MR40
Category: Microphones

Specifications

Parameter	Value
Receiving Frequency Range	640–690 MHz
Receiver Sensitivity	-94 dBm (30 dB)
Image Rejection	>60 dB
Frequency Stability	±0.005%
Modulation Method	FM
Maximum Frequency Deviation	±45 kHz
Frequency Response	50 Hz–18 kHz (±3 dB)
Signal-to-Noise Ratio (SNR)	>105 dB
Dynamic Range	>100 dB
Total Harmonic Distortion (T.H.D.)	<0.5%
Operating Temperature	-10°C to 55°C
Receiver Power Supply	12 V/1 A
Transmitting Frequency Band	640–690 MHz
Harmonic Radiation	<-63 dBm
Bandwidth	80 MHz
Maximum Input Sound Pressure Level	130 dB SPL
Transmitter Current Consumption	<110 mA
Transmitter Output Power	30 mW
Transmitter Power Supply	2 × 1.5 V AA batteries

Service Support

We support project consultation, model recommendation, bulk purchasing and catalog delivery for retail, multipurpose halls, conference rooms and live events.

Business hours: Monday to Friday 09:00 - 18:30
Inquiry channels: phone / email / website form
Tip: share budget, quantity and use scenario in advance

UHF quad-handheld wireless microphone product image

Product Overview

The Harmonai MR40 UHF quad-handheld wireless microphone system is engineered for professional applications including conferences, live performances, and public speaking. Operating in the UHF 640–690 MHz band, a single receiver supports four handheld transmitters simultaneously—ideal for multi-user environments. With a receiver sensitivity of -94 dBm, SNR exceeding 105 dB, dynamic range over 100 dB, and total harmonic distortion under 0.5%, every vocal performance is reproduced with clarity, stability, and full fidelity.

Technical Specifications

Receiving Frequency Range

640–690 MHz

Receiver Sensitivity

-94 dBm (30 dB)

Image Rejection

>60 dB

Frequency Stability

±0.005%

Modulation Method

Maximum Frequency Deviation

±45 kHz

Frequency Response

50 Hz–18 kHz (±3 dB)

Signal-to-Noise Ratio (SNR)

>105 dB

Dynamic Range

>100 dB

Total Harmonic Distortion (T.H.D.)

<0.5%

Receiver Power Supply

12 V / 1 A

Transmitting Frequency Band

640–690 MHz

Bandwidth

80 MHz

Maximum Input Sound Pressure Level

130 dB SPL

Transmitter Output Power

30 mW

Harmonic Radiation

<-63 dBm

Transmitter Current Consumption

<110 mA

Transmitter Power Supply

2 × 1.5 V AA batteries

Operating Temperature

-10°C to 55°C

Recommended Applications

The Harmonai MR40 quad-handheld wireless microphone system is ideal for small-to-medium conference rooms, training classrooms, auditorium speeches, cultural performances, church services, KTV venues, wedding hosting, and outdoor roadshows. Its four independent channels support simultaneous speaking or singing by up to four users, while the UHF band ensures robust, interference-resistant signal transmission for clear, uninterrupted communication.

For more details or customized solutions, contact the Harmonai professional support team—we offer one-on-one technical assistance and procurement consultation.