1. Introduction
Thank you for choosing the Monster Persona 3rd ANC Active Noise Canceling Headphones. This manual provides essential information for setting up, operating, and maintaining your headphones to ensure optimal performance and longevity.

Image: Monster Persona 3rd ANC Headphones in Carbon Black. These over-ear headphones feature a sleek design with comfortable earcups and an adjustable headband.
2. What's in the Box
Please check the package contents to ensure all items are present:
- Monster Persona 3rd ANC Headset
- USB-C Charging Cable
- Quick Guide
3. Setup
3.1 Charging the Headphones
Before first use, fully charge your headphones. Connect the provided USB-C charging cable to the charging port on the headphones and the other end to a USB power source (e.g., computer USB port, wall adapter). The LED indicator will show charging status. A full charge provides approximately 70 hours of playtime.

Image: Monster Persona 3rd ANC Headphones highlighting their 70-hour playtime capability. The image shows the headphones alongside a large '70' indicating extended battery life.
3.2 Bluetooth Pairing
To connect your headphones to a device:
- Ensure the headphones are charged and powered off.
- Press and hold the Power button until the LED indicator flashes blue and red, indicating pairing mode.
- On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "Monster Persona 3rd ANC" from the list.
- Once connected, the LED indicator will turn solid blue or off, depending on the model.
The headphones support Bluetooth 5.4 for a stable connection and multipoint connection, allowing simultaneous pairing with two devices.

Image: Monster Persona 3rd ANC Headphones positioned between a laptop and a smartphone, illustrating the multipoint connection feature that allows simultaneous pairing with two devices.
4. Operating Instructions
4.1 Controls Overview
The Monster Persona 3rd ANC headphones feature intuitive controls for easy management of audio and calls. Refer to the diagram below for button functions:

Image: A detailed diagram showing the control buttons on the Monster Persona 3rd ANC headphones, including volume controls, power/multi-function button, and ANC button, with corresponding actions for single clicks and long presses.
| Button/Action | Function |
|---|---|
| + (Click x1) | Volume Up |
| + (Long Press 1s) | Next Song |
| - (Click x1) | Volume Down |
| - (Long Press 1s) | Previous Song |
| ON/OFF (Long Press 2s) | Power ON |
| ON/OFF (Long Press 4s) | Power OFF |
| ON/OFF (Click x1) | Play/Pause Music, Answer Call |
| ON/OFF (Long Press 1s) | Reject Call, Hang Up Call |
| ANC (Click x1) | Switch ANC Modes (Standard, Noise Cancellation, Transparency) |
| ON/OFF (Long Press 1s) | Activate Voice Assistant |
4.2 Music Modes
Your headphones offer three distinct listening modes:
- Standard Mode: Provides a balanced sound profile for general listening.
- Noise Cancellation (ANC) Mode: Actively reduces ambient noise, ideal for focusing on audio in noisy environments.
- Transparency Mode: Allows you to hear your surroundings while still enjoying your audio, useful for awareness in public spaces.
Press the ANC button to cycle through these modes.

Image: A woman wearing Monster Persona 3rd ANC headphones, accompanied by icons and text explaining the three music modes: Balanced Mode, ANC Mode, and Transparency Mode, illustrating how users can customize their listening experience.
4.3 Wired Connection
The headphones support wired audio input using a C-C audio cable (not included). This allows for audio playback even when Bluetooth is not available or preferred. Simply connect the C-C audio cable to the Type-C port on the headphones and to your audio source.

Image: A person wearing Monster Persona 3rd ANC headphones, with a visible cable connecting the headphones to a smartphone, demonstrating the seamless wired and wireless switching capability using the Type-C port.
4.4 Comfort and Portability
The Monster Persona 3rd ANC headphones are designed for extended comfort and easy portability. They feature plush sponge cushioning on the ear cups and an adjustable headband for a customized fit. The compact folding design allows them to be easily stored and carried.

Image: A visual representation of the comfort features of the Monster Persona 3rd ANC headphones, highlighting their foldable design, adjustable headband, and simulated leather earcups for all-day comfort.
5. Maintenance
5.1 Cleaning
To clean your headphones, use a soft, dry, lint-free cloth. Do not use abrasive cleaners, solvents, or spray directly onto the headphones. Avoid getting moisture into any openings.
5.2 Storage
When not in use, store the headphones in a cool, dry place, away from direct sunlight and extreme temperatures. Utilize the foldable design to minimize space and protect the headphones during travel.
5.3 Battery Care
To prolong battery life, avoid fully discharging the headphones frequently. If storing for an extended period, charge the battery to approximately 50% every few months.
6. Troubleshooting
If you encounter issues with your Monster Persona 3rd ANC headphones, please refer to the following common solutions:
| Problem | Possible Solution |
|---|---|
| Headphones do not power on | Ensure the headphones are fully charged. Press and hold the Power button for 2 seconds. |
| Cannot pair with device | Ensure headphones are in pairing mode (flashing blue/red LED). Turn off and on Bluetooth on your device. Move headphones closer to the device. Clear previous Bluetooth connections on your device. |
| No sound or low volume | Check volume levels on both headphones and connected device. Ensure headphones are properly connected. Try playing different audio. |
| Noise Cancellation not effective | Ensure ANC mode is activated (press ANC button). Adjust headphone fit to ensure a good seal around your ears. |
| Wired connection not working | Ensure the C-C audio cable is fully inserted into both the headphones and the audio source. Verify the cable is not damaged. |
If the problem persists, please consult the Quick Guide included with your product or contact Monster customer support.
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | Monster Persona 3rd ANC |
| Model Number | MH22231 |
| Noise Control | Active Noise Cancellation |
| Connectivity Technology | Wireless (Bluetooth), Wired (supports C-C audio cable) |
| Bluetooth Version | 5.4 |
| Battery Life | Up to 70 Hours |
| Earpiece Shape | Over Ear |
| Material | Fabric, Plastic |
| Item Weight | 233 Grams (8.2 ounces) |
| Frequency Range | 20 Hz - 20,000 Hz |
| Impedance | 10 Ohm |
| Control Method | Touch |
8. Warranty and Support
Monster products are designed and manufactured to the highest quality standards. For warranty information and customer support, please refer to the warranty card included with your product or visit the official Monster website. You may also consider purchasing extended protection plans for additional coverage.
For direct assistance, please contact Monster customer service through their official channels.





