Monster Persona 3rd

Monster Persona 3rd ANC Headphones User Manual

Model: Persona 3rd | Brand: Monster

1. Introduction

This manual provides detailed instructions for the Monster Persona 3rd ANC Active Noise Canceling Headphones. Please read this manual thoroughly before using your headphones to ensure proper operation and to maximize your listening experience. Keep this manual for future reference.

Monster Persona 3rd ANC Headphones, front view

Image 1.1: Front view of the Monster Persona 3rd ANC Headphones.

2. Key Features

  • Pure Monster Sound: Equipped with custom 40mm drivers for crisp highs, balanced mids, and powerful deep bass.
  • Active Noise Cancellation (ANC): Features 6 ANC microphones and hybrid noise-canceling technology, reducing up to 90% of ambient noise, especially mid-to-low frequencies.
  • Extended Battery Life: Up to 45 hours of playtime with ANC mode enabled, and up to 70 hours in standard mode.
  • Versatile Listening Modes: Offers Standard, Noise-Canceling, and Transparency modes for various environments.
  • Comfortable & Portable Design: Memory-protein foam ear cups, adjustable metal headband, and foldable design for comfort and easy storage.
  • Wired & Wireless Connectivity: Bluetooth 5.4 for stable wireless connection and Type-C wired option for lossless audio when the battery is depleted.
Exploded view of headphone driver components illustrating Pure Monster Sound technology

Image 2.1: Illustration of the headphone's internal driver components for Pure Monster Sound.

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., wall adapter, computer USB port). The LED indicator will show charging status and turn off when fully charged.

3.2 Power On/Off

  • Power On: Press and hold the Power/Multi-function button for approximately 2 seconds until the LED indicator lights up and you hear a power-on prompt.
  • Power Off: Press and hold the Power/Multi-function button for approximately 3 seconds until the LED indicator turns off and you hear a power-off prompt.

3.3 Bluetooth Pairing

  1. Ensure the headphones are powered off.
  2. Press and hold the Power/Multi-function button for approximately 5 seconds until the LED indicator flashes blue and red alternately, indicating pairing mode.
  3. On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
  4. Select "Monster Persona 3rd" from the list of found devices.
  5. Once connected, the LED indicator will flash blue slowly, and you will hear a connection confirmation.
Headphone with internal circuit board showing Bluetooth 5.4 for fast connection

Image 3.1: Visual representation of Bluetooth 5.4 connectivity for quick pairing.

3.4 Wired Connection (Type-C)

For a wired connection, plug a Type-C audio cable (not included) into the headphone's Type-C port and the other end into your audio source's Type-C port. This mode is useful when the battery is low or for devices without Bluetooth. Note: The wired connection on mobile devices only supports Type-C port input and output.

4. Operating Instructions

4.1 Controls Overview

The headphones feature intuitive controls located on the earcups. Refer to the diagram below for button functions:

Diagram showing headphone controls for volume, power, ANC, and playback

Image 4.1: Detailed diagram of headphone controls and their functions.

Headphone Control Functions
Button/ActionFunction
Volume Up (+) Click x1Increase Volume
Volume Up (+) Long Press 1sNext Song
Volume Down (-) Click x1Decrease Volume
Volume Down (-) Long Press 1sPrevious Song
ON/OFF Long Press 2sPower On
ON/OFF Long Press 4sPower Off
ON/OFF Click x1Play/Pause
ON/OFF Long Press 1sReject Calls / Hang Up
ON/OFF Click x1Answer Call
ON/OFF Long Press 1sActivate Voice Assistant
ANC Button Click x1Switch Listening Modes (Standard, ANC, Transparency)

4.2 Listening Modes

The Monster Persona 3rd ANC headphones offer three distinct listening modes:

  • Standard Mode: Delivers balanced sound for everyday listening without active noise cancellation or transparency.
  • Noise-Canceling (ANC) Mode: Reduces ambient noise, allowing you to immerse yourself in music in noisy environments. Ideal for travel or busy places.
  • Transparency Mode: Allows you to hear your surroundings while still enjoying your audio. Useful for staying aware of announcements or conversing without removing your headphones.

To switch between modes, press the dedicated ANC button once. The headphones will announce the current mode.

Woman wearing headphones with icons for Balanced, ANC, and Transparency modes

Image 4.2: Visual representation of the three available music modes.

4.3 Multi-Device Connection

The headphones support connecting to two devices simultaneously. After pairing with the first device, put the headphones back into pairing mode and connect to the second device. The headphones will intelligently switch between devices for calls and audio playback.

5. Maintenance

  • Cleaning: Use a soft, dry cloth to clean the headphones. Do not use liquid cleaners or aerosols.
  • Storage: When not in use, store the headphones in a cool, dry place, preferably in their carrying case (if included) to protect them from dust and damage. The foldable design aids in compact storage.
  • Battery Care: To prolong battery life, avoid fully discharging the headphones frequently. Charge them regularly, even if not used for extended periods.
  • Avoid Extreme Conditions: Do not expose the headphones to extreme temperatures, humidity, or direct sunlight.
Close-up of headphone earcup showing simulated leather and adjustable, foldable design for comfort

Image 5.1: Illustration of the comfortable and portable design features.

6. Troubleshooting

Common Issues and Solutions
ProblemSolution
Headphones do not power on.Ensure the headphones are charged. Connect to a power source and try again.
Cannot pair via Bluetooth.
  • Ensure headphones are in pairing mode (LED flashing blue/red).
  • Turn off and on Bluetooth on your device.
  • Forget "Monster Persona 3rd" from your device's Bluetooth list and try pairing again.
  • Ensure headphones are within 10 meters of your device.
No sound or low volume.
  • Check volume levels on both headphones and your connected device.
  • Ensure headphones are properly connected via Bluetooth or wired Type-C.
  • Try restarting both the headphones and your device.
ANC not working effectively.
  • Ensure ANC mode is activated (press the ANC button).
  • Check that the earcups form a good seal around your ears.
  • ANC is most effective against low-frequency, constant noise.
Sound quality is poor.
  • Ensure the audio source is of good quality.
  • Try different listening modes (Standard, ANC, Transparency) to see if it improves.
  • If using Bluetooth, ensure there are no obstructions between the headphones and the device.

7. Specifications

Technical Specifications
FeatureDetail
BrandMonster
Model NamePersona 3rd
Ear PlacementOver Ear
Noise ControlActive Noise Cancellation
Connectivity TechnologyWired (USB-C), Wireless (Bluetooth)
Bluetooth Version5.4
Audio Driver TypeDynamic Driver (40mm)
Frequency Range20Hz - 20,000Hz
Battery Life (ANC On)Up to 45 Hours
Battery Life (Standard Mode)Up to 70 Hours
Microphones6 ANC Microphones
MaterialMemory Foam, Metal
Folding FeaturesFoldable Design

8. Warranty and Support

Monster products are designed and manufactured to the highest quality standards. For detailed warranty information and customer support, please refer to the warranty card included with your product or visit the official Monster website. Keep your proof of purchase for warranty claims.

For further assistance, you may contact Monster customer service through their official channels.

© 2026 Monster. All rights reserved.

Monster and Persona 3rd are trademarks of Monster, Inc.

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