1. Introduction
The BOYA BY-M1 is an omnidirectional lavalier microphone designed for a wide range of devices including smartphones, DSLR cameras, camcorders, audio recorders, and PCs. It is ideal for video recording, interviews, presentations, and general audio capture. Featuring an omni-directional pickup pattern, it captures sound from all directions, providing comprehensive 360-degree coverage. The microphone includes a 6-meter (20-foot) cable with a 3.5mm 4-pole gold plug for versatile connectivity. It operates with a switch to select between 'Smartphone' mode (OFF) and 'Camera' mode (ON) for optimal performance with different devices.
2. Package Contents
Please check the package to ensure all items are present:
- BOYA BY-M1 Omnidirectional Lavalier Condenser Microphone
- Lapel Clip
- Foam Windscreen
- 1/4" Adapter
- LR44 Battery
- English User's Manual

3. Product Features
- Clip-on microphone design for hands-free use.
- Omni-directional condenser microphone for 360° sound pickup.
- High-quality condenser element suitable for video recording.
- Low handling noise for clear audio.
- Compatible with smartphones, DSLR cameras, camcorders, audio recorders, and PCs.
- Integrated 6-meter (20-foot) audio cable for extended reach.
- 3.5mm 4-pole gold plug for reliable connection.


4. Setup and Connection
4.1 Battery Installation
The microphone requires one LR44 battery for operation when used with cameras, camcorders, audio recorders, or PCs. The battery is pre-installed or included in the package.
- Unscrew the two parts of the control module to reveal the battery compartment.
- Insert the LR44 battery with the positive (+) side facing upwards.
- Screw the two parts back together securely.
4.2 Connecting to Devices
The BOYA BY-M1 features a switch on its control module to optimize performance for different device types.

4.2.1 For Smartphones (iOS/Android)
When using the microphone with a smartphone, the battery is not required, and the microphone draws power directly from the device.
- Slide the ON/OFF switch on the control module to the OFF/Smartphone position.
- Plug the 3.5mm TRRS connector into your smartphone's headphone/microphone jack.
- Ensure your recording application is set to use the external microphone.

4.2.2 For DSLR Cameras, Camcorders, Audio Recorders, PC
When using the microphone with these devices, the internal LR44 battery powers the microphone.
- Slide the ON/OFF switch on the control module to the ON position.
- Plug the 3.5mm TRS connector into your device's microphone input jack.
- If your device has a 1/4" input, use the included 1/4" adapter.

5. Operating Instructions
Once connected, the BOYA BY-M1 is ready for use. For optimal audio quality, consider the following:
- Placement: Clip the microphone to your clothing, ideally about 6-8 inches (15-20 cm) from your mouth, to capture clear voice.
- Windscreen: Always use the foam windscreen to reduce plosives (harsh 'p' and 'b' sounds) and minimize wind noise, especially outdoors.
- Cable Management: The 6-meter cable provides flexibility. Ensure it is routed safely to avoid tripping hazards or accidental disconnections.
- Monitoring: If your recording device allows, monitor the audio with headphones during recording to ensure proper levels and sound quality.


6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your microphone.
- Cleaning: Use a soft, dry cloth to clean the microphone body and cable. Do not use liquid cleaners or solvents.
- Windscreen: The foam windscreen can be gently washed with mild soap and water, then air-dried completely before reattaching. Replace if it becomes torn or loses its shape.
- Storage: Store the microphone in a cool, dry place, away from direct sunlight and extreme temperatures. Coil the cable loosely to prevent kinks or damage.
- Battery: If the microphone will not be used for an extended period, remove the LR44 battery to prevent leakage and potential damage to the control module.

7. Troubleshooting
If you encounter issues with your BOYA BY-M1 microphone, refer to the following common problems and solutions:
- No Sound / Low Sound:
- Check Switch Position: Ensure the switch on the control module is in the correct position for your device (OFF/Smartphone for smartphones, ON for cameras/PCs).
- Battery: If using with a camera/PC, check if the LR44 battery is installed correctly and has sufficient charge. Replace if necessary.
- Connection: Verify the 3.5mm plug is fully inserted into the device's microphone jack.
- Device Settings: Check your device's audio input settings to ensure the external microphone is selected and input levels are not muted or too low.
- Poor Sound Quality / Static / Hum:
- Switch Position: Incorrect switch position can lead to poor audio. Double-check it.
- Interference: Keep the microphone and cable away from strong electromagnetic fields (e.g., power cables, Wi-Fi routers).
- Cable Damage: Inspect the cable for any visible damage or kinks.
- Windscreen: Ensure the foam windscreen is properly installed to reduce wind noise and plosives.
- Battery (for Camera/PC): A low battery can sometimes cause distorted audio. Replace the LR44 battery.
- Microphone Not Recognized by PC:
- Switch Position: Ensure the switch is in the ON position.
- Input Jack: Ensure you are plugging into the microphone input (often pink or marked with a microphone icon), not a headphone output.
- Drivers: Ensure your computer's audio drivers are up to date.
8. Specifications
| Specification | Value |
|---|---|
| Transducer Type | Electret Condenser |
| Polar Pattern | Omni-directional |
| Frequency Range | 65Hz ~ 18KHz |
| Signal / Noise | 74dB SPL |
| Sensitivity | -30dB +/-3dB / 0dB=1V/Pa, 1kHz |
| Output Impedance | 1000 Ohm or less |
| Output Connection | 3.5mm (1/8") 4-pole gold plug |
| Battery Type | LR44 |
| Audio Cable Length | 6 meters (20 feet) |
| Item Weight | 3.52 ounces |
| Model Number | BYM1 |
9. Warranty and Support
BOYA products are designed and manufactured to the highest quality standards. For warranty information and technical support, please refer to the official BOYA website or contact your local distributor. Keep your purchase receipt as proof of purchase for warranty claims.





