1. Product Overview
The Shure SM31FH is a cardioid condenser headset microphone designed for active performance environments, particularly fitness instruction. Its construction features hydrophobic materials to resist moisture and corrosion, ensuring durability during intense use. The microphone offers clear voice reproduction and a secure fit for consistent performance.

Figure 1: Shure SM31FH Fitness Headset Microphone. This image displays the headset microphone with its flexible boom and over-ear design, highlighting its compact and ergonomic form factor.
Key Features:
- Weatherproof Design: Constructed with hydrophobic materials to withstand tough environments and moisture.
- Secure Fit: Comfortable wireframe headset designed to remain stable during high-energy activities.
- Superior Sound Quality: Cardioid condenser microphone with tailored frequency response for clear and natural voice reproduction.
- Sweat-Resistant: Hydrophobic fabric mesh protects the microphone from moisture damage.
- Lightweight & Discreet: Low-profile design for minimal visibility and comfort during extended use.
- Easy to Set Up: Features TA4F 4-pin (TQG) connectors for compatibility with Shure wireless bodypack systems (sold separately).
- On/Off Switch: Convenient switch for easy control and battery conservation.
2. What's in the Box
- SM31FH Microphone
- Replacement Clip
- 2 Wind Screens

Figure 2: Included accessories for the Shure SM31FH, featuring two foam wind screens and a replacement clip for securing the microphone cable.
3. Setup and Operation
3.1 Connecting the Headset
- Ensure your Shure wireless bodypack system (sold separately) is powered off.
- Connect the TA4F 4-pin (TQG) connector of the SM31FH headset microphone securely into the input jack of your Shure wireless bodypack transmitter.
- Attach the bodypack transmitter to your clothing or belt using the provided clip.
- Position the headset comfortably on your head, ensuring the microphone boom is positioned near your mouth for optimal sound capture. The flexible boom allows for precise adjustment.
- Turn on the wireless bodypack transmitter using its On/Off switch.
- Power on your Shure wireless receiver and ensure it is tuned to the same frequency group and channel as your bodypack transmitter.
3.2 Powering the Microphone
The SM31FH is a condenser microphone and requires phantom power to operate. This power is supplied by the connected Shure wireless bodypack transmitter. Ensure your bodypack has fresh batteries (1 Lithium Ion battery required) or is adequately charged for uninterrupted performance.
3.3 Using the On/Off Switch
The headset features a convenient On/Off switch. Use this switch to quickly mute or unmute the microphone, or to conserve battery life when not actively speaking.
3.4 Product Overview Video
Video 1: A brief product overview of the Shure SM31FH headset microphone, demonstrating its key features and design. This video provides a visual introduction to the product.
3.5 Wireless Fitness Headset Microphone Demonstration
Video 2: A demonstration of the Shure SM31FH Wireless Fitness Headset Condenser Microphone in use, showcasing its performance and comfort during active scenarios.
4. Maintenance
- Cleaning: Regularly wipe down the headset and microphone boom with a soft, damp cloth. For hygiene, especially in shared environments, use a mild disinfectant.
- Wind Screens: The included wind screens help protect the microphone capsule from moisture and reduce plosive sounds. Replace them as needed to maintain optimal sound quality and hygiene.
- Storage: Store the headset in a dry, cool place away from direct sunlight and extreme temperatures. Avoid coiling the cable tightly to prevent damage.
- Moisture Protection: While designed to be sweat-resistant, prolonged exposure to excessive moisture should be avoided. Allow the headset to air dry completely after heavy use.
5. Troubleshooting
- No Sound:
- Ensure the headset's On/Off switch is in the "On" position.
- Verify the wireless bodypack transmitter is powered on and has fresh batteries.
- Check that the wireless receiver is powered on and correctly tuned to the same frequency group and channel as the transmitter.
- Confirm all cables are securely connected between the headset, transmitter, and receiver/audio system.
- Poor Sound Quality/Interference:
- Ensure the microphone boom is positioned correctly near the mouth.
- Check the condition of the wind screen; replace if damaged or saturated.
- Verify that the transmitter and receiver are within the recommended operating range and free from obstructions.
- Check for potential sources of interference (e.g., other wireless devices, strong electromagnetic fields) and adjust placement if necessary.
- Headset Not Staying Secure:
- Adjust the wireframe for a snug but comfortable fit around the head.
- Ensure the replacement clip is properly used to secure any excess cable.
6. Specifications
| Model Name | SM31FH |
| Item Model Number | SM31FH-TQG |
| Brand | Shure |
| Microphone Form Factor | Headset Microphone Only |
| Polar Pattern | Unidirectional (Cardioid) |
| Connectivity Technology | Wireless (requires Shure wireless bodypack system) |
| Connector Type | TA4F (4-pin TQG) |
| Power Source | Phantom Power (supplied by wireless bodypack) |
| Batteries Required | 1 Lithium Ion (for compatible bodypack) |
| Item Weight | 6.4 ounces |
| Product Dimensions | 7.6 x 6.4 x 3.2 inches |
| Color | Black/Orange |
| Recommended Uses | Singing, Streaming, Fitness Instruction |
7. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official Shure website or contact Shure customer service directly. Keep your proof of purchase for any warranty claims.
You can visit the official Shure Store for additional product information and support: Shure Store





