Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of the TONOR T40 Microphone Boom Arm. Designed for stability and versatility, this boom arm enhances your audio recording experience by providing flexible microphone positioning and efficient cable management.

Image: The TONOR T40 Microphone Boom Arm is shown with its included desk clamp, extra-large pop filter, and cable ties, illustrating the complete package.
What's in the Box
The TONOR T40 Microphone Boom Arm package includes the following components:
- 1 x Boom Arm
- 1 x Desk Clamp
- 1 x Pop Filter
- 4 x Cable Ties
- 1 x 5/8'' Adapter Screw
- 1 x Instruction Manual

Image: A clear layout of all components included in the TONOR T40 package: the boom arm, desk clamp, pop filter, 5/8'' adapter screw, and cable ties.
Key Features
- Reliable Structure: Designed to withstand tens of thousands of pulls and support an impressive 2kg (4.4 lbs) load at a 90° angle, ensuring stability for your microphone.
- Refined Clamp: Features an increased contact area (38cm²) for enhanced stability and a silicone pad on the bottom to protect tables from damage. Compatible with desk thicknesses up to 6cm (2.36 inches).
- 180° Extra-large Pop Filter: Effectively reduces airflow noise from a broad range of angles. Compatible with microphones up to 7.5cm (2.95 inches) in diameter.
- Cutting-edge Design: Hidden spring design integrates high-strength springs inside the tubing for a sleek appearance, enhanced durability, and improved user experience.
- High Compatibility: Equipped with 3/8'' screws and includes a 5/8'' adapter screw, allowing compatibility with most microphones and shock mounts.
Durability and Load Capacity

Image: The TONOR T40 Boom Arm is depicted holding a 4.4 lbs (2kg) weight at a 90-degree angle, demonstrating its robust load-bearing capability.
Enhanced Clamp Design

Image: A comparison highlighting the TONOR T40's upgraded clamp with a large 38cm² contact area and soft rubber pad for stability and desk protection, contrasting with an older, less stable design.
Integrated Pop Filter

Image: The TONOR T40's extra-large 180° curved pop filter is shown, illustrating its effectiveness in reducing plosive sounds and compatibility with various microphone sizes.
Setup Instructions
- Attach Desk Clamp: Position the desk clamp on a flat surface up to 6cm (2.36 inches) thick. Tighten the screw until the clamp is securely fastened to the desk. Ensure the silicone pad is in contact with the desk surface to prevent damage.
- Insert Boom Arm: Insert the base of the boom arm into the hole on the desk clamp. The arm should slide in smoothly and be able to rotate freely.
- Attach Microphone: Screw your microphone onto the 3/8'' thread at the end of the boom arm. If your microphone requires a 5/8'' thread, use the included adapter screw.
- Install Pop Filter: Attach the pop filter to the boom arm and position it in front of your microphone to reduce plosive sounds.
- Cable Management: Use the provided cable ties to secure your microphone cable along the boom arm for a neat and organized setup.
Desk Clamp Installation

Image: A close-up of the desk clamp, showing its maximum compatibility of 2.36 inches (6cm) and the 360° rotatable base for flexible positioning.
Official Setup Video
Video: This official TONOR video demonstrates the setup process for the T40 Microphone Boom Arm, including attaching the clamp, inserting the arm, and mounting a microphone.
Operating Instructions
The TONOR T40 Microphone Boom Arm offers extensive adjustability to suit various recording needs:
- Arm Rotation: The boom arm can rotate 360° at its base, allowing you to swing the microphone into any desired position.
- Joint Adjustment: The flexible joints allow for 135° adjustment, enabling precise angling of the microphone.
- Microphone Adapter: The microphone adapter offers 240° rotation for fine-tuning microphone direction.
- Tension Adjustment: The hidden spring design provides consistent tension. If further adjustment is needed, use the provided hex wrench to tighten or loosen the screws at the joints.
Flexible and Adjustable Positioning

Image: This graphic illustrates the TONOR T40 Boom Arm's range of motion, including 240° microphone adapter rotation, 135° flexible joint adjustment, and 360° rotatable clamp.
Maintenance
- Regularly check all screws and joints for tightness. Tighten with the provided hex wrench if any looseness is detected.
- Keep the boom arm clean by wiping it with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Ensure cables are properly routed and not pinched by the arm's joints or clamp.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Boom arm is wobbly or unstable. | Desk clamp is not tight enough or desk surface is uneven. | Ensure desk clamp is fully tightened. Use the silicone pad for better grip. If the desk is uneven, consider adding padding. |
| Microphone sags or does not hold position. | Joints are too loose or microphone is too heavy. | Tighten the screws at the arm joints using the hex wrench. Verify microphone weight does not exceed 2kg (4.4 lbs). |
| Pop filter is ineffective. | Incorrect positioning or microphone diameter exceeds compatibility. | Adjust pop filter closer to the microphone. Ensure microphone diameter is within 7.5cm (2.95 inches). |
Specifications
- Brand: TONOR
- Model: T40
- Item Weight: 3.08 pounds (1.4 Kilograms)
- Package Dimensions: 17.52 x 9.33 x 3.11 inches
- Body Material: Alloy Steel, Acrylonitrile Butadiene Styrene (ABS)
- Color: Black
- Size: 15.7inch (Arm Length)
- Connector Type: Threaded Mount (3/8-inch and 5/8-inch adapter included)
- Max Load Capacity: 2kg (4.4 lbs) at 90° angle
- Desk Clamp Compatibility: Up to 6cm (2.36 inches) thickness
- Pop Filter Compatibility: Microphones up to 7.5cm (2.95 inches) diameter
Warranty and Support
For warranty information or technical support, please refer to the contact details provided on the product packaging or visit the official TONOR website.
Date First Available: September 8, 2023





