1. Introduction
Thank you for purchasing the Moukey MAMX1 4-Channel Ultra-Low Noise Line Mini Audio Mixer. This device is designed to provide a compact and efficient solution for mixing multiple line-level audio signals into a single output. Its ultra-low noise operation ensures high-quality audio performance, making it suitable for various applications including small clubs, bars, and personal recording setups involving instruments like guitars, basses, and keyboards.
2. Product Overview
The Moukey MAMX1 mixer features four input channels and one output channel, each with independent volume control. It supports both stereo and mono input/output configurations, offering flexibility for different audio setups. The compact design and DC 5V USB power supply make it highly portable and versatile.
Key Features:
- Stereo/Mono Switching: Each input channel can be switched between stereo and mono modes. For stereo input/output, use 1/4-inch (6.35mm) TRS stereo audio cables. For mono, the mixer combines up to eight mono signal inputs into one mono signal output. (Note: TRS/TS cables are not included.)
- Space-saving & Convenient: Its compact size and simple operation make it easy to transport and integrate into any setup. Ideal for mixing multiple channels from multi-keyboard devices or for recording purposes.
- DC 5V Power Supply: Powered by a modern DC 5V USB connection, offering flexible power options and reducing location restrictions.
- Easy Operation: Each input channel has an independent volume adjustment knob, allowing precise control over individual audio sources. A master output volume knob is also provided.
- Ultra-Low Noise: Engineered for ultra-low noise operation, ensuring clear and high-fidelity audio performance without distortion.
Product Components:
- Moukey MAMX1 Mixer Unit
- USB Power Cable (1 meter)
3. Setup
Follow these steps to set up your Moukey MAMX1 mixer:
- Power Connection: Connect the provided USB power cable to the DC 5V input port on the mixer. Connect the other end of the USB cable to a compatible 5V USB power source, such as a USB wall adapter, power bank, computer USB port, or laptop. The power indicator light will illuminate when connected correctly.

Image: Rear view of the MAMX1 mixer showing the DC 5V input and output ports.
- Input Connections: Connect your audio sources (e.g., guitar, bass, keyboard, microphone preamps) to the INPUT 1, INPUT 2, INPUT 3, and INPUT 4 jacks using 1/4-inch (6.35mm) TRS or TS cables. Each input has a corresponding volume knob (LEVEL 1-4).

Image: The MAMX1 mixer with various 1/4-inch cables connected to its inputs and output, illustrating TRS and TS plug types.
- Output Connection: Connect the OUTPUT jack of the mixer to your amplifier, recording interface, or other audio playback device using a 1/4-inch (6.35mm) TRS balanced cable. The overall output volume is controlled by the OUTPUT knob.

Image: A diagram illustrating how to connect various instruments like electronic pianos, guitars, and electronic drums to the MAMX1 mixer, and then connect the mixer to a larger audio mixer.
4. Operating Instructions
The MAMX1 mixer is designed for straightforward operation:
- Adjusting Input Volume: Each input channel (INPUT 1-4) has a dedicated LEVEL knob. Rotate these knobs clockwise to increase the volume of the corresponding input source and counter-clockwise to decrease it.
- Stereo/Mono Switching: Above each input LEVEL knob, there is a switch to toggle between "Mono" and "Stereo" modes. Press the switch to select the desired mode for each input. Ensure your cables are appropriate for the selected mode (TRS for stereo, TS for mono).
- Adjusting Master Output Volume: The overall output volume of the mixed signal is controlled by the OUTPUT knob. Rotate this knob clockwise to increase the master volume and counter-clockwise to decrease it. It is recommended to start with the OUTPUT knob at a low setting and gradually increase it to avoid sudden loud sounds.

Image: A detailed view of the MAMX1 mixer's control panel, highlighting the individual LEVEL knobs for each input, the stereo/mono switches, and the master OUTPUT volume knob.
Video: Moukey MAMX1 Features Overview
5. Maintenance
To ensure the longevity and optimal performance of your Moukey MAMX1 mixer, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the mixer. Avoid using abrasive cleaners, solvents, or waxes, as these can damage the finish.
- Storage: When not in use, store the mixer in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Handle the mixer with care. Avoid dropping it or subjecting it to strong impacts, which can damage internal components.
- Cable Management: Ensure all cables are connected securely and are not under strain. Avoid bending cables sharply, which can lead to damage.
6. Troubleshooting
If you encounter issues with your Moukey MAMX1 mixer, refer to the following common troubleshooting steps:
- No Sound Output:
- Check if the mixer is properly powered on (power indicator light should be illuminated).
- Ensure all audio cables are securely connected to the correct input and output jacks.
- Verify that the LEVEL knobs for the active input channels and the master OUTPUT knob are turned up.
- Check the volume settings on your connected audio sources and playback devices.
- Test with different cables and audio sources to rule out faulty equipment.
- Distorted Sound:
- Reduce the input LEVEL knobs and the master OUTPUT knob. Overdriving the mixer or connected devices can cause distortion.
- Ensure the stereo/mono switches are set correctly for your input sources.
- Check the quality of your audio cables; damaged cables can introduce noise or distortion.
- Humming or Hissing Noise:
- Ensure all connections are secure and properly grounded.
- Try using a different power adapter or USB port to rule out power supply interference.
- Keep audio cables away from power cables and other sources of electromagnetic interference.
- If using a computer, ensure it is properly grounded and consider using a USB isolator if noise persists.
- Intermittent Sound:
- Check all cable connections for looseness or damage.
- Ensure the power supply is stable and not intermittently disconnecting.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | Moukey |
| Model | MAMX1 |
| Number of Channels | 4 |
| Product Dimensions (D x W x H) | 7.5 x 10.4 x 2.4 cm (2.95 x 4.1 x 0.95 inches) |
| Connectivity Technology | USB |
| Power Source | Corded Electric (DC 5V) |
| Output Connector Type | 1/4 inch (6.35mm) TRS (Balanced) |
| Audio Input Type | 1/4 inch (6.35mm) TRS (Mono Signal) |
| Voltage | 5 Volts |
| Material | Iron Metal |
| Manufacturer | Donner |
| Country of Origin | China |
| UPC | 715802779251 |
| ASIN | B08535J456 |
8. Warranty and Support
The Moukey MAMX1 mixer comes with a 1-year warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. Please retain your proof of purchase for warranty claims.
For technical support, troubleshooting assistance, or warranty inquiries, please contact Moukey customer service through the retailer where you purchased the product or visit the official Moukey website for contact information.

