Boya BY-WM4 Pro K2 Wireless Microphone System


RM480.00(Approx. $ 100.57)

SKU: BY-WM4-PRO-K2 Category:
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The BOYA BY-WM4 Pro K2 is a 2.4GHz wireless microphone system consisting of a belt-pack dual-channel receiver and two belt-pack transmitters, which are compatible with smartphone, DSLR, consumer camcorders, PCs, etc.

Dual-channel Receiver Delivers Two Sound Sources Simultaneously
Equipped with a dual-channel wireless belt-pack receiver, BY-WM4 Pro K2 wireless microphone system is able to captures two sound sources and delivers both of them to your recording devices simultaneously.

Two Different Outputs on Receiver
There are two kinds of different outputs on top of the receiver — audio output and headphone monitoring output. Users can deliver audio to cameras via the 3.5mm TRS to TRS cable or to smartphones via another 3.5mm TRS to TRRS cable. Meanwhile, it is able to monitor audio from receiver, after plugging a headset into the headphone monitoring jack.

Innovative Line Input on Transmitter
In addition, the transmitter comes with a line input jack that allows it to accept audio like background music from external devices. This will be to a little benefit of post-production when recording with appropriate line input audio.

Compact Body with Powerful Ability
Both transmitter and receiver are company and light, each one only about 47g (1.7oz), the BY-WM4 Pro K2 works about 6 hours and operation distance is up to 60m (197ft) without obstacles.

Every Accessory You Need Is Available
Of course, two omnidirectional lavalier microphone, zipper bag, standard camera shoe mount, audio output cables, foam windscreens and clips are available.



  • Compatible with smartphone, DSLR,
      consumer camcorders and PCs etc.
  • Ideal for video, podcast, and mobile journalism
      applications etc.
  • 2.4GHz digital transmission technology.
  • Two Transmitter and one dual-channel Receiver.
  • Line input jack on transmitter for digital audio input.
  • Headphone jack on receiver for real-time monitoring.
  • Up to 60m (197ft) operation range without obstacle.
  • Powered by two AAA batteries.
  • Omnidirectional lavalier microphones, zipper bag,
      standard camera shoe mount and clips included.



RF Modulation: GFSK (Gauss frequency Shift Keying)
Frequency band: 2.4GHz (2405-2478MHz)
Frequency response: 35Hz-14KHz±3dB
Signal/Noise: 84dB or more
Distortion: 0.05% or less (32Ω,1 KHz,65mW output)
RF output level: 3mW
Earphone output level: 32Ω,65mW
Reception sensitivity: -90dB +/- 3dB / 0dB=1V/Pa, 1kHz
Audio input connector: 3.5mm mini jack
Operation range: 60m (197ft) (without obstacle)
Power requirements: 3V DC (Two AAA size batteries)

Consumption power:
Transmitter: 3V/70mA

Receiver: 45x70x35mm (1.8*2.8*1.4 inches)
Transmitter: 45x70x35mm (1.8*2.8*1.4 inches)

Receiver: 47g (1.7 oz)
Transmitter: 47g (1.7 oz)


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