Introduction
The 1Mii S04 Multimedia Volume Controller is designed to provide convenient and precise control over your computer's audio. This device features a rotary knob for volume adjustment, a one-click mute function, and dedicated buttons for multimedia playback control. It offers plug-and-play functionality, requiring no drivers for use with compatible Windows and Mac operating systems.
Package Contents:
- 1Mii S04 Multimedia Volume Controller
- USB-C to USB-A Cable
- 3.5mm AUX Cable
- User Manual

Image: Package contents of the 1Mii S04 Multimedia Volume Controller.
Product Overview
The 1Mii S04 features a sleek design with a central rotary knob and three control buttons. It includes a USB-C port for power and data, and a 3.5mm audio input/output port for connecting external audio devices.

Image: Rear view of the 1Mii S04 controller showing USB-C and 3.5mm audio ports.
Setup
- Connect to Computer: Use the provided USB-C to USB-A cable to connect the 1Mii S04 controller to an available USB port on your computer. The device is plug-and-play and does not require driver installation.
- Optional Audio Connection: If you wish to route audio through the controller to headphones or speakers, connect your audio device to the 3.5mm AUX output port on the 1Mii S04 using the provided 3.5mm AUX cable. Similarly, you can connect an audio source to the 3.5mm AUX input port.
- Power On: Once connected, the blue LED light on the knob will illuminate, indicating the device is powered on and ready for use.

Image: The 1Mii S04 controller connected to a computer, demonstrating plug-and-play setup.
Operating Instructions
The 1Mii S04 Multimedia Volume Controller offers intuitive controls for your audio experience.
- Volume Control: Rotate the central knob clockwise to increase the volume and counter-clockwise to decrease it.
- Mute/Unmute: Press the central knob once to instantly mute the audio. Press it again to unmute. This function helps prevent sudden loud sounds and protects your privacy during calls or meetings.
- Multimedia Control: Use the three buttons located below the knob for multimedia playback control:
- Left Button (<): Previous track.
- Middle Button (▲): Play/Pause.
- Right Button (>): Next track.

Image: Adjusting volume by rotating the knob.

Image: Activating the one-key mute function by pressing the knob.
Compatibility
The 1Mii S04 Multimedia Volume Controller is compatible with the following operating systems:
- Windows 7
- Windows 8
- Windows 10
- Mac OS
Note: The Previous/Next/Play/Pause buttons may not function when controlling web-based music or video players, depending on the specific application and browser.
Maintenance
To ensure the longevity and optimal performance of your 1Mii S04 Multimedia Volume Controller, follow these maintenance guidelines:
- Keep the device clean by wiping it with a soft, dry cloth.
- Avoid exposing the device to liquids, excessive moisture, or extreme temperatures.
- Do not attempt to disassemble or repair the device yourself, as this may void the warranty and cause damage.
Troubleshooting
If you encounter issues with your 1Mii S04 controller, please refer to the following common solutions:
- No Power/LED Not Lit:
- Ensure the USB cable is securely connected to both the controller and your computer.
- Try connecting the controller to a different USB port on your computer.
- Test with a different USB-C to USB-A cable if available.
- Volume Control Not Working:
- Verify that the controller is recognized by your operating system. Check your computer's sound settings to ensure the correct audio output device is selected.
- Restart your computer.
- Multimedia Buttons Not Responding:
- Ensure you are using a compatible media player application. Some web-based players may not fully support these controls.
- Close and reopen the media player application.
- Audio Distortion or No Sound (when using 3.5mm AUX):
- Check that the 3.5mm AUX cables are fully inserted into both the controller and your audio device.
- Ensure your audio device (headphones, speakers) is functioning correctly.
Specifications
| Feature | Detail |
|---|---|
| Model Name | S04 |
| Brand | 1Mii |
| Connectivity Technology | USB |
| Compatible Devices | Mac, Windows 10, Windows 7, Windows 8 |
| Control Method | Touch (Knob Press) |
| Power Source | Power Cord (USB powered) |
| Special Feature | Mute Control |
| Mounting Type | Tabletop Mount |
| Item Weight | 349 g |
| Package Dimensions | 14.4 x 11.61 x 7.7 cm |
Warranty and Support
For warranty information or technical support, please refer to the contact details provided with your product packaging or visit the official 1Mii website. Keep your purchase receipt for warranty claims.





