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BOYA BY-BM2021 Compact Supercardioid On-Camera Shotgun Microphone
KSh 3,480.00
Technical Specifications
Category Specification
Acoustic Principle Condenser Capsule
Polar Pickup Pattern Supercardioid (Highly directional forward-facing focus)
Frequency Response 40 Hz – 20 kHz
Sensitivity -35dB $\pm$ 3dB (at 1kHz, 0dB=1V/Pa)
Signal-to-Noise Ratio (SNR) 76 dB
Output Connectivity 1x 3.5mm TRS mini-jack terminal port
BOYA BY-BM2021 Compact Supercardioid On-Camera Shotgun Microphone
Supercharge your mobile vlogging, content creation, and run-and-gun videography with the BOYA BY-BM2021. This ultra-lightweight, compact directional shotgun microphone is engineered to deliver high-fidelity, broadcast-quality audio directly to your camera or smartphone. Featuring a tightly focused supercardioid polar pattern, it captures crystal-clear sound from the subject directly in front of the lens while actively suppressing distracting off-axis ambient noise. Operating entirely on plug-and-play bus power with no battery required, the BY-BM2021 keeps your camera rig agile and always ready to record.
Technical Specifications
| Category | Specification |
| Acoustic Principle | Condenser Capsule |
| Polar Pickup Pattern | Supercardioid (Highly directional forward-facing focus) |
| Frequency Response | 40 Hz – 20 kHz |
| Sensitivity | -35dB $\pm$ 3dB (at 1kHz, 0dB=1V/Pa) |
| Signal-to-Noise Ratio (SNR) | 76 dB |
| Output Connectivity | 1x 3.5mm TRS mini-jack terminal port |
| Cables Included | 1x 3.5mm TRS to TRS (for Cameras), 1x 3.5mm TRS to TRRS (for Smartphones/Tablets) |
| Power Supply | Plug-and-Play architecture (Powered directly by camera or smartphone bus power) |
| Shock Mounting | Integrated reinforced ABS shock mount with cold-shoe and 1/4″-20 tripod thread |
| Chassis Construction | Premium lightweight, structural ABS engineering polymer |
| Dimensions / Weight | 168mm x 77.2mm x 49.9mm | Weight: 63g (featherweight design) |
BOYA BY-BM2021 Pros and Cons
Pros
- Battery-Free Independence: Runs entirely on plug-and-play host power, preventing unexpected audio failures from depleted batteries during critical live shoots.
- Featherweight ABS Design: Weighing a mere 63g, this microphone adds zero meaningful bulk, making it easy to balance on motorized smartphone or mirrorless gimbals.
- Advanced Supercardioid Focus: Narrows the pickup field more effectively than standard cardioid models, ensuring sharper vocal isolation in noisy urban environments.
- Integrated High-Strength Shock Mount: The built-in suspension structure acts as a physical barrier against operational vibration and lens autofocus mechanical tracking noises.
- Universal Platform Switching: Arrives complete with individual TRS and TRRS audio lines, allowing you to cycle instantly from cinematic mirrorless cameras to mobile devices.
Cons
- No Physical Gain Controls: Operates without on-board input gain dials or low-cut filters; all level attenuation must be adjusted through the host device software.
- Modern Port Adapters Not Included: Attaching the device to current smartphone models requires an external 3.5mm-to-Lightning or 3.5mm-to-USB-C dongle.
BOYA BY-BM2021 Variations and Price Guide
| Model / Variation | Key Differences | Typical Price Range (KES) |
| BOYA BY-BM2021 (Standard) | Base kit with ultra-light ABS body, integrated shock mount, foam windscreen, and dual 3.5mm cables. | 3,500 – 4,800 |
| BOYA BY-MM1 (Ultra-Compact Alternative) | Shorter aluminum build with wider cardioid pickup, suited for pocket-sized smartphone cages. | 2,800 – 3,800 |
| BOYA BY-BM2040 (Upgraded Supercardioid) | Upgraded physical frame with reinforced capsule architecture and improved frequency response. | 5,500 – 7,000 |
BOYA BY-BM2021 Suitable Application Areas
- Vlogging & YouTube Content Creation: Serves as an immediate, run-and-gun upgrade for solo lifestyle creators, product reviewers, and travel vloggers seeking crisp vocal definition.
- Mobile Journalism (MoJo) & Interviews: Fits effortlessly onto smartphone rigs for field reporters who need to run fast, battery-free directional audio capture during street press assignments.
- TikTok, Reels & Shorts Generation: Delivers clean voice presence directly into vertical video setups, boosting viewer engagement through polished sound quality.
- Remote Work & Webinars: Mounts securely onto desktop mini-tripods to provide remote professionals and educators with crystal-clear voice transmission over Zoom and Microsoft Teams.
Verdict
The BOYA BY-BM2021 strikes an ideal balance between extreme portability and targeted directional performance. By implementing a highly focused supercardioid pattern inside an ultra-lightweight, battery-free housing, it cleanly isolates the speaker’s voice while saving content creators from structural rig weight and battery management. It stands as an excellent, budget-friendly asset for elevating local run-and-gun video productions.
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