1. Introduction
Thank you for choosing the Zopsc M1 Mini Active 3.5mm Volume Control Knob. This device provides convenient and precise volume adjustment for various audio setups. Designed for ease of use and durability, it enhances your audio experience across multiple platforms.

Image: Zopsc M1 Mini Active 3.5mm Volume Control Knob, front view.
2. Key Features
- Durable Construction: Small and exquisite design with a metal shell and ALPS rotating shaft, manufactured using CNC machining for a strong structure.
- 3.5mm Universal Interface: Features both 3.5mm input and output ports for broad compatibility.
- High Performance Audio: Equipped with linear on-board inductors for a good listening experience, a high-end stepper potentiometer, and bottom foam pads for stability.
- Plug and Play Functionality: Easy to use with no complex setup required. Simply connect and operate.
- Mobile Device Compatibility: Can be used with mobile phones when connected via an OTG cable (not included).
- Versatile Applications: Ideal for adjusting audio during video watching, gaming, weddings, celebrations, conferences, and other events.
3. Package Contents
The Zopsc M1 Mini Active 3.5mm Volume Control Knob package includes:
- 1 x Zopsc M1 Mini Active Volume Control Knob
Note: Additional cables (e.g., 3.5mm audio cables, OTG cable) are not included and may need to be purchased separately depending on your setup.
4. Setup Guide
The Zopsc M1 volume control knob is designed for simple plug-and-play operation. Follow these steps to connect your device:
- Identify Ports: Locate the "IN" and "OUT" 3.5mm ports on the volume control knob.
- Connect Input Device: Connect your audio source (e.g., tablet, computer, mobile phone, player) to the 3.5mm Input port using a 3.5mm audio cable.
- Connect Output Device: Connect your audio output device (e.g., power amplifier, active speaker, headphone amplifier) to the 3.5mm Output port using a 3.5mm audio cable.
- Mobile Phone Connection (Optional): If connecting to a mobile phone, an OTG cable (not included) may be required to facilitate the connection.

Image: Zopsc M1 Mini Active 3.5mm Volume Control Knob connected to a tablet, illustrating input and output connections.

Image: Zopsc M1 Mini Active 3.5mm Volume Control Knob shown with various mobile devices, highlighting its plug-and-play nature.
5. Operating Instructions
Once connected, the Zopsc M1 provides intuitive control over your audio volume:
- Volume Adjustment: Rotate the central knob clockwise to increase the volume and counter-clockwise to decrease it. The high-end stepper potentiometer ensures smooth and precise adjustments.
- Mute Function: Press the central knob to instantly mute or unmute the audio.

Image: Top view of the Zopsc M1 volume control knob, showing the rotating mechanism for volume adjustment.

Image: Close-up of the Zopsc M1 volume knob, highlighting its textured surface for better grip and precise control.
Official Product Videos:
Video: Sonshine Inline Volume Controller. This video demonstrates the functionality of a similar inline volume controller, showing how to connect and adjust volume.
Video: Electronics More Volbox Controller. This video showcases another inline volume controller, demonstrating its universal audio device support and flexible volume control solution.
6. Maintenance
To ensure the longevity and optimal performance of your Zopsc M1 volume control knob, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the exterior of the device. Avoid using harsh chemicals or abrasive materials, as they may damage the finish.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Cable Care: Handle connected cables gently to prevent damage to the connectors or the device ports.
- Avoid Liquids: Keep the device away from water and other liquids to prevent internal damage.

Image: Bottom view of the Zopsc M1 Mini Active 3.5mm Volume Control Knob, showing the foam pads designed for stability and protection.
7. Troubleshooting
If you encounter any issues with your Zopsc M1, please refer to the following common solutions:
| Problem | Solution |
|---|---|
| No audio output. |
|
| Volume control is unresponsive. |
|
| Sound quality is poor or distorted. |
|
8. Specifications
| Attribute | Detail |
|---|---|
| Brand Name | Zopsc |
| Model | M1 (Zopsc9k58bdh3s1) |
| Item Weight | 3.52 ounces |
| Package Dimensions | 3.86 x 3.07 x 2.28 inches |
| Interface Input | 3.5mm |
| Interface Output | 3.5mm |
| Material | Aluminum Alloy (shell), ALPS rotating shaft |
| ASIN | B0BXJS2SF1 |
| Date First Available | March 5, 2023 |
9. Warranty & Support
Warranty Information:
This Zopsc product is covered by a standard manufacturer's warranty against defects in materials and workmanship. Please refer to the product packaging or the retailer's website for specific warranty terms and duration. Keep your proof of purchase for warranty claims.
Customer Support:
For technical assistance, troubleshooting, or general inquiries, please contact Zopsc customer support through the retailer's platform or the official Zopsc website. Our support team is available to help you with any questions or concerns you may have regarding your product.
You can visit the Zopsc Store for more information: Zopsc Store on Amazon