‌BOYA BY-WM8 PRO-K4 is a wireless set consisting of: 1 hand microphone with transmitter, 1 tie microphone with transmitter (bodypack) and two channel receiver.

The set is ideal for a wide range of situations, such as interviews, electronic broadcasting (ENG), field productions (EFP), film production etc.

The receiver is equipped with microphone and headphone output jacks.

The BY-WM8 Pro-K2 system consists of 1 tie microphone with bodypack transmitter and a hand-held microphone with built-in transmitter and a receiver mounted on the camera. This system also includes a foot mount adapter, a single 3.5mm jack to XLR output cable, a single 3.5mm jack to 3.5mm jack output cable and a carrying case.

The camera-mounted receiver has a wide RF frequency band, a clear LCD display and a 3.5mm headphone jack for real-time monitoring.

The most important product features:

- Two-channel wireless receiver

- It consists of 2 transmitters and one receiver and 2 microphones (tie and hand-held)

- UHF transmission with 48UHF channels

- Ideal for ENG / EFP, DSLR movies

- Transmission quality sound

- Operating range can reach up to 100 m

- Adjustable MONO and stereo mode

- Powered by 2 AA batteries both transmitters and receiver

Technical data:

- Carrier frequency range: 556.71 MHz-575.98 MHz (transmitter: A) 576.39 MHz-595.66 MHz (transmitter: B)

- Channels: 48

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

- Operating range: 100 m (300 ft) (unobstructed)

- Audio input connector: 3.5 mm mini jack

- Signal to noise ratio: 70 dB or more

- Distortion: 0.5% or less

- Headphone output level: 30 mW (16 Ohm)

- Working time: about 4 hours

- Dimensions: 208 x 67 x 29 mm

- Weight: 90 g