Mascom International stocks the BOYA BY-WM4 Pro-K6 at KSh 20,500, a dual-channel digital wireless system with two TX4 Pro body-pack transmitters and one USB-C receiver for Android phones. It is brand new and sealed in the box. The BOYA BY-WM4 Pro-K6 sends both lavalier microphones to a single 9.5g receiver over 2.4GHz, with about 60 metres of line-of-sight range. Each transmitter takes two AAA batteries, the receiver runs off the phone, and a hard case keeps the whole set together and safe in a bag or backpack. You can test the kit at our shop in the Old Mutual Building on Kimathi Street, Nairobi CBD.
Built for podcasters, talk-show hosts, journalists, HR trainers and church media teams across Kenya, the BOYA BY-WM4 Pro-K6 captures two speakers on one phone without either voice sounding distant. A phone propped between two people records the room, the ceiling fan and the street outside, and both voices fade. With a lavalier on each collar, every word lands close and clear. That covers a two-person business podcast recorded in Westlands, a county health officer interviewed in Kisumu, or an Eldoret couple filming a joint cooking channel in their own kitchen at home.
Where most Nairobi electronics shops offer one-person kits and suggest buying two, Mascom International stocks the BOYA BY-WM4 Pro-K6 so both microphones feed a single USB-C port. Customers across Nairobi tell us that is the feature they came looking for: one phone, one recording, two clear voices. The BOYA BY-WM4 Pro-K6 uses the same receiver as the BOYA BY-WM4 Pro-K5 and adds a second transmitter and lavalier. Visit us to hear both channels on your own phone, or order online with pay-on-arrival delivery anywhere in Kenya.
Common Questions About the BOYA BY-WM4 Pro-K6
How much does the BOYA BY-WM4 Pro-K6 dual microphone cost in Kenya?
The BOYA BY-WM4 Pro-K6 costs KSh 20,500 brand new at Mascom International on Kimathi Street, Nairobi. For that you get two TX4 Pro transmitters, two lavalier microphones, the USB-C receiver, a hard carrying case and our 6-month warranty. Plan on four AAA batteries, two per transmitter. That is KSh 4,000 more than the single-transmitter BOYA BY-WM4 Pro-K5, and the difference buys a complete second microphone channel. Delivery is pay-on-arrival across all counties, with M-Pesa or cash accepted at your door.
Should I choose the BOYA BY-WM4 Pro-K6 or the BOYA Omic-U?
Pick the BOYA BY-WM4 Pro-K6 for longer range and swappable batteries, and the BOYA Omic-U for a smaller kit that recharges in its case. The BOYA BY-WM4 Pro-K6 reaches about 60 metres against the BOYA Omic-U's 50 metres, and its body-packs use separate lavaliers that hide under clothing. The BOYA Omic-U uses clip-on lapel transmitters, one-tap noise cancelling and a charging case rated for 15 hours. Interviewers on long field days usually lean toward the BOYA BY-WM4 Pro-K6, because spare AAA cells are sold in every town.
Does the BOYA BY-WM4 Pro-K6 suit field work in heat, dust and coastal humidity?
The BOYA BY-WM4 Pro-K6 handles normal field conditions, though BOYA publishes no dust or water rating, so treat it with the same care as a phone. The hard case in the box protects both transmitters, the mics and the receiver between shoots on dusty murram roads. In Mombasa or Lamu humidity, remove the AAA batteries before storing the kit for weeks, because leaking cells corrode contacts. Keep the transmitters out of direct midday sun when you film outdoors for long spells, and wipe dust off the connectors before plugging in.
Can two people record at the same time on the BOYA BY-WM4 Pro-K6?
Yes, the BOYA BY-WM4 Pro-K6 is dual-channel, so both transmitters send audio to the single USB-C receiver at the same time. Each speaker wears a TX4 Pro body-pack and a lavalier, and the phone captures both voices in one video file. You need no mixer, splitter or second phone. Clip each lavalier about a hand's width below the chin so the two voices arrive at similar levels, and run a short test before you start rolling. Earphones in the receiver's headphone jack let you check both channels.
Is the BOYA BY-WM4 Pro-K6 good for podcasts and panel discussions?
The BOYA BY-WM4 Pro-K6 works well for two-person podcasts, talk shows and short panel segments where a host and a guest share the conversation. Because each person wears a microphone on the collar, the sound stays close even when they lean back or turn to face each other. At Mascom International, we're seeing church media teams and corporate trainers use it for sit-down conversations that go straight onto YouTube and Facebook. Panels of three or more people need a different setup, such as a table microphone or a mixer.
How far apart can the speakers be with the BOYA BY-WM4 Pro-K6?
Each transmitter of the BOYA BY-WM4 Pro-K6 can sit up to about 60 metres from the receiver with clear line of sight. Speakers can stand on opposite sides of a stage, walk through a farm or talk across a classroom while the phone stays on a tripod. Walls, crowds and metal shorten the working distance. For walk-and-talk shoots, keep the phone ahead of both speakers rather than behind them, which gives the steadiest signal on both channels. Avoid placing the phone inside a metal cage.
Does the BOYA BY-WM4 Pro-K6 work with laptops for Zoom or Google Meet?
The BOYA BY-WM4 Pro-K6 works with USB-C computers as well as phones, according to BOYA, so it can serve as the microphone for Zoom, Google Meet or Microsoft Teams. Plug the receiver into a USB-C port, select it as the input in your meeting app, and two presenters can speak without crowding the laptop. That suits online lectures, webinars and hybrid board meetings. Laptops with only USB-A ports need an adapter, so bring yours to test with us at the Kimathi Street shop before buying.
Who should buy the BOYA BY-WM4 Pro-K6, and who is better served by another kit?
Buy the BOYA BY-WM4 Pro-K6 if two people regularly speak in your videos, podcasts or interviews and you record on a USB-C Android phone. If you work alone, the BOYA BY-WM4 Pro-K5 does the same job for one voice at KSh 4,000 less. Videographers who shoot on a DSLR or camcorder are better served by the BOYA BY-WM4 Pro, which has 3.5mm camera outputs and a hot-shoe receiver. Phone-based duos remain the best match for this kit.
Technical Specifications
Dual-Channel Wireless Performance
- Dual-channel digital system — two TX4 Pro transmitters send audio to one receiver, so two speakers share a single recording.
- 2.4GHz band on 2405-2478MHz with GFSK modulation — a digital signalling method that keeps speech free of analogue hiss and crackle.
- Range of about 60 metres in open line of sight — speakers can move freely across a stage, hall or open compound.
- Omnidirectional lavalier microphones — each capsule picks up its wearer evenly, even when heads turn during a conversation.
- Frequency response of 35Hz to 14kHz within 3dB — covers the full range of the speaking voice for talk and interview content.
- Signal-to-noise ratio of 84dB or more — both voices stay well above the system's own noise floor, so edits come out clean.
- 3.5mm headphone output on the receiver, rated 32 ohms at 65mW — plug in earphones to monitor both speakers as you record.
Device Support and Compatibility
- Designed for Android phones and other USB-C devices — the receiver plugs straight into the charging port with no cable.
- Works with USB-C computers, BOYA states — use it for webinars, online classes, voice-overs and recorded meetings.
- Receiver is powered by the phone or computer — there is nothing to charge or replace on the receiver side.
- Acts as a standard USB audio input — no app needed, since camera, recorder and streaming apps can select it directly.
- Not for micro-USB phones or Lightning iPhones — check the port on your device before placing an order.
- Works on tripods and phone gimbals — the receiver uses the bottom port, so pick a clamp that leaves that port open.
- Both voices arrive through one input — editing apps treat the recording as a single audio track, with no syncing needed afterwards.
Build, Power and Protection
- Each TX4 Pro transmitter weighs about 47g and measures about 45 x 70 x 35mm — clips to a belt or waistband out of sight.
- BY-WM4 RXU receiver weighs about 9.5g and measures about 82 x 30.7 x 12mm — light enough to leave hanging from the phone.
- Each transmitter runs on two AAA batteries for about 11.5 hours — four cells power the full kit through a long recording day.
- 3.5mm microphone input on each transmitter — fit a replacement lavalier or a headset mic for stage and fitness work.
- Hard carrying case — keeps both transmitters, both mics and the receiver together and protected inside a backpack.
- Black finish on every unit — the body-packs and receiver stay discreet on camera and on stage.
Kit Inclusions
- Two TX4 Pro body-pack transmitters — one for each speaker, already matched to the same receiver system.
- One BY-WM4 RXU USB-C receiver — takes both channels into the phone through its single port.
- Two omnidirectional lavalier microphones — one capsule for each transmitter, ready to clip on.
- Two foam windscreens and two microphone clips — wind protection and secure mounting for each lavalier.
- Pairing pin and hard case — the pin is used during pairing, and the case protects the kit in transit.
Package Contents
The BOYA BY-WM4 Pro-K6 ships brand new in its sealed BOYA box, packed inside a hard case for travel. You receive two TX4 Pro body-pack transmitters, one BY-WM4 RXU USB-C receiver, two omnidirectional lavalier microphones, two foam windscreens, two microphone clips and a pairing pin. The four AAA batteries the transmitters need are not part of the kit, so pick up a set from Mascom International when you collect.
Warranty
Mascom International backs the BOYA BY-WM4 Pro-K6 with a 6-month warranty covering manufacturing defects in both transmitters, the receiver and the microphones under normal use. To make a claim, bring the kit, its case and your receipt to our Nairobi CBD service desk at the Old Mutual Building on Kimathi Street for assessment.
Where to Buy the BOYA BY-WM4 Pro-K6 in Kenya
The BOYA BY-WM4 Pro-K6 is available at Mascom International, Old Mutual Building, First Floor Room 4, Kimathi Street, Nairobi CBD. Our doors are open Monday through Saturday, 9:00 AM to 7:00 PM. Come with a co-host and your phone, and we will set up both microphones so you can hear the two channels before you decide. The kit comes in black.
Talk to us before you order:
- Phone/WhatsApp: +254 708 852 521
- Email: info@mascomintl.com
- Website: www.mascomintl.com
We deliver with pay-on-arrival to all 47 counties. Customers in Nairobi and its environs get the kit the same day, and buyers in Kericho, Nyeri, Kisii, Malindi and Naivasha receive it on the next business day. Mandera, Wajir, Marsabit, Lamu, Tana River, and Turkana receive delivery within 2-3 business days.
The kit is protected by the 6-month warranty above. You get honest specifications, accurate pricing and after-sales backing from a real shop in the CBD, so support is a phone call or short walk away.
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