BY-WM8 Pro-K2 Wireless Microphone System


UHF Dual-Channel Wireless Microphone System

  • Dual-Channel Wireless Receiver
  • 48 Selectable UHF Channels
  • Broadcast-Quality Sound
  • Includes Two Transmitters and One Receiver
  • Seletable Stereo and Mono Mode
  • Mic and Line-in
  • Selectable Mute function
  • Easy-to-read LCD displays
  • Automatic LCD-locked Function
  • Monitoring sound by headphone output (Receiver)
  • Operation range can reach up to 100m(300′) (without obstacle)
  • Two AA batteries for both transmitter and receiver

Product Description

The BOYA BY-WM8 Pro-K2 allows you to capture audio with dual subjects, features an easy-to-read LCD display, a wide switching RF bandwidth, PLL-synthesized tuning and digital companding circuitry. The package is suitable for a wide range of wireless applications such as interviews, electronic news gathering (ENG), electronic field productions (EFP), film production, business and educational applications, and more.


The BY-WM8 Pro-K2 system consists of two bodypack transmitters, a camera-mount receiver, and two omnidirectional lavalier microphones. Also included with this system is a shoe-mount adapter, a single 1/8″ to XLR output cable, a single 1/8 to 1/8″ output cable, carrying case. The receiver is built with mic and headphone output jacks. The bodypack transmitter includes a MIC jack and LINE IN jack.

  • Digital Companding
  • Up to 48 Selectable channels
  • Dual-Channel
  • Up to 32 MHz of transmission bandwidth
  • Easy and flexible wireless synchronization between transmitter and receiver via infrared.
  • User-friendly menu operation
  • Muting function
  • Wide range of accessories adapts the system to most of requirements
  • Locked-plug avoids accidental changing of settings
  • Transmission Range: up to 100 meters / 300


Oscillator type: PLL Synthesized Control Oscillator

Carrier Frequency Range: 576.4 MHz-599.9 MHz (Transmitter: A ); 568.6 MHz-592.1 MHz (Transmitter: B )

Channels: 48

Frequency response: 40 Hz to 18 kHz (+/-3dB)

Operation range: 100m (300′)(without obstacle)

Operating temperature: 14F to 122F (-10C to +50C)

Storage temperature: 14F to 131F (-10C to +55C)


RF output power: ≤10 mW

Antenna: 1/4λ wire antenna

Spurious emission: 250 nW or less

Audio input connector: 3.5mm mini jack

Reference audio input level: –60 dBV (MIC input, 0 dB attenuation)

Reference deviation: ±5 kHz (–60 dBV, 1 kHz input)

Input frequency range: 20 Hz-20 KHz

Distortion: 0.5% or less

Power supply: Two AA size batteries

Operation time: About 6 hours

Dimensions: 208(H) × 67(W) × 29(L)mm

Weight: 80g without batteries


Antenna: 1/4λ wire antenna

Audio input connector: 3.5mm mini jack

Signal-to-noise ratio: 70 dB or more

Distortion: 0.5% or less

Headphone output level: 30mW (16 Ω)

Audio output level: –60 dBV

Power supply: Two AA size batteries

Operation time: About 4 hours

Dimensions: 208(H) × 67(W) × 29(L)mm

Weight: 90g without batteries

Lavalier Microphone

Transducer: Back electret Condenser

Polar pattern:           Omni-directional

Frequency Range: 35Hz ~ 18 KHz

Signal / Noise: 74dB SPL

Sensitivity: -30dB +/-3dB / 0dB=1V/Pa, 1 kHz

Connector: 3.5mm locking mini plug

Length: 1.2m (4’)