Introducció
Thank you for choosing the Monster Open Ear AC520 Headphones. These wireless earbuds are designed to provide a comfortable open-ear listening experience with high-fidelity sound, extended battery life, and robust features for daily use. This manual will guide you through the setup, operation, and maintenance of your new headphones.

Image: The Monster Open Ear AC520 headphones, showing both earbuds and the open charging case. The earbuds feature an ear-hook design and a sleek black finish with gold Monster branding.
Què hi ha a la caixa
Si us plau, comproveu el contingut del paquet per assegurar-vos que hi hagi tots els elements:
- Monster Open Ear AC520 Headphones × 1 pair
- Portable Lanyard × 1
- Funda de càrrega × 1
- Cable de càrrega tipus C × 1
- Manual d'usuari × 1

Image: A flat lay of all items included in the product packaging: the user manual, the charging case, the headphones, a USB-C charging cable, and a portable lanyard.
Configuració
1. Càrrega dels auriculars i l'estoig
Before first use, fully charge your Monster Open Ear AC520 headphones and the charging case.
- Connecteu el cable de càrrega tipus C proporcionat al port de càrrega de la funda i a una font d'alimentació USB.
- Els indicadors lluminosos de la caixa mostraran l'estat de càrrega.
- A full charge for the case and earbuds takes approximately 1 hour.
- The headphones provide up to 8 hours of listening on a single charge, and the charging case extends total playtime to 24 hours.

Image: An illustration highlighting the 24-hour total playtime, with 1 hour charging time, 7 hours single charge playtime, and 24 hours with the charging case.
2. Emparellament amb el dispositiu
The Monster Open Ear AC520 headphones utilize advanced Bluetooth 6.0 technology for a fast and stable connection.
- Obre l'estoig de càrrega. Els auriculars entraran automàticament en mode d'emparellament.
- Al dispositiu (telèfon intel·ligent, tauleta, ordinador), aneu a la configuració de Bluetooth i activeu el Bluetooth.
- Select "Monster Open Ear AC520" from the list of available devices.
- Once connected, you will hear a confirmation tone, and the indicator lights on the headphones will change.

Image: A graphic illustrating the benefits of Upgraded Bluetooth 6.0, including more stable connection, lower power consumption, lower latency, and longer transmission range.
3. Com portar
Per a una comoditat i una qualitat de so òptimes, assegureu-vos de portar els auriculars correctament.
- Traieu els auriculars de l'estoig.
- Place the earhooks behind your ears for a secure fit.
- Lightly twist the earbuds until they feel comfortable and secure in your open ear.

Image: A three-step visual guide demonstrating how to properly wear the open-ear headphones, showing removal from case, placing the earhook, and adjusting for a secure fit.
Instruccions de funcionament
Controls tàctils
The Monster Open Ear AC520 headphones feature intuitive touch controls on each earbud.
| Acció | Control (L/R Earbud) | Funció |
|---|---|---|
| Click × 2 | L/R | Reproducció/pausa de música |
| Mantingueu 2 s | L/R | Activa l'Assistent de veu |
| Click × 3 | L | Cançó anterior |
| Click × 3 | R | Següent Cançó |
| Click × 2 | L/R | Respon a la trucada |
| Mantingueu 2 s | L/R | Penja la trucada |
| Click × 1 | L | Baixa el volum |
| Click × 1 | R | Puja el volum |

Image: A visual representation of the touch control functions on the earbuds, detailing single, double, and triple taps, and long presses for various actions like play/pause, volume, track skipping, and call management.
Característiques clau
- So pur de monstre: Experience rich, dynamic audio with deep bass and clear highs, thanks to advanced Monster HiFi sound technology and a 14.5mm speaker.

Imatge: Una explosió view diagram showing the internal components of the earbud, highlighting the 14.5mm speaker and acoustic cavity structure responsible for the Pure Monster Sound.
- Comoditat amb les orelles obertes: Designed for non-intrusive wear, these earbuds provide a comfortable fit even for glasses wearers, allowing you to stay aware of your surroundings.

Image: A person wearing the open-ear headphones, demonstrating their comfortable and non-intrusive fit, with an inset comparing the fit to traditional in-ear earbuds that can cause discomfort.
- Unique Handbag Design & Portable Lanyard: The charging case features a sleek slide-open mechanism and a removable lanyard, offering both style and convenience for carrying your headphones.

Image: A person wearing the Monster Open Ear AC520 headphones and the charging case with its removable lanyard around their neck, showcasing the stylish and portable design.
- Crystal Clear Calls (ENC): An AI noise reduction algorithm minimizes audio distractions, ensuring clear calls even in noisy environments.

Image: A visual representation of sound waves before and after noise reduction, illustrating the effectiveness of the AI noise reduction algorithm for clear calls.
- Resistència a l'aigua IPX6: Built to withstand sweat and rain, making them ideal for workouts and outdoor activities.

Image: A close-up of the earbud with water splashes, indicating its IPX6 water resistance, suitable for keeping sweat and light rain out.
- Surround Awareness & Safety: The open-ear design allows you to enjoy your music while remaining aware of your surroundings, enhancing safety outdoors and facilitating conversations indoors.
Manteniment
To ensure the longevity and optimal performance of your Monster Open Ear AC520 Headphones, follow these maintenance guidelines:
- Neteja: Use a soft, dry, lint-free cloth to clean the earbuds and charging case. Do not use abrasive cleaners, alcohol, or chemical sprays.
- Exposició a l'aigua: While IPX6 water resistant, avoid submerging the headphones in water. Dry them thoroughly if they get wet from sweat or rain before placing them back in the charging case.
- Emmagatzematge: Quan no els utilitzeu, guardeu els auriculars a la funda de càrrega per protegir-los de la pols i els danys. Guardeu-los en un lloc fresc i sec, allunyat de temperatures extremes.
- Càrrega: Feu servir només el cable de càrrega tipus C proporcionat o un equivalent certificat. Eviteu utilitzar cables o carregadors danyats.
Resolució de problemes
If you encounter any issues with your Monster Open Ear AC520 Headphones, please refer to the following common solutions:
- Headphones not pairing/connecting:
- Assegureu-vos que els dos auriculars estiguin completament carregats.
- Desactiva i activa el Bluetooth del dispositiu.
- Forget "Monster Open Ear AC520" from your device's Bluetooth list and try pairing again.
- Assegureu-vos que els auriculars estiguin dins de l'abast de Bluetooth de 10 metres del vostre dispositiu.
- Sense so o volum baix:
- Check the volume level on both your headphones (using touch controls) and your connected device.
- Ensure the headphones are properly seated in your ears.
- Reconnect the headphones to your device.
- La caixa de càrrega no es carrega:
- Ensure the Type-C charging cable is securely connected to both the case and the power source.
- Proveu un altre port USB o adaptador de corrent.
- Comproveu si el cable de càrrega està danyat.
- Un auricular no funciona:
- Torneu a col·locar els dos auriculars a l'estoig de càrrega, tanqueu la tapa, espereu uns segons i torneu-los a treure.
- Assegureu-vos que els dos auriculars estiguin carregats.
- Perform a factory reset if available (refer to manufacturer's weblloc web per obtenir instruccions específiques si no es detallen aquí).
Especificacions
| Característica | Detall |
|---|---|
| Nom del model | Monster Open Ear AC520 Headphones |
| Tecnologia de connectivitat | Sense fil |
| Tecnologia de comunicació sense fils | Bluetooth |
| Versió Bluetooth | 6.0 |
| Interval Bluetooth | 10 metres |
| Col·locació de l'orella | Orella oberta |
| Factor de forma | True Wireless |
| Tipus de control | Control tàctil |
| Durada de la bateria | 24 hores (amb estoig de càrrega) |
| Temps de reproducció amb una sola càrrega | Fins a 8 hores |
| Temps de càrrega | Aprox. 1 hora |
| Classificació de resistència a l'aigua | IPX6 |
| Tipus de controlador d'àudio | Dynamic Driver (14.5mm speaker) |
| Material | Plàstic |
| Pes de l'article | 7 unces |
| Fabricant | Monstre |
Garantia i Suport
Monster products are designed and manufactured to the highest quality standards. For information regarding warranty coverage, please refer to the warranty card included in your product packaging or visit the official Monster weblloc.
For technical support, troubleshooting assistance, or general inquiries, please contact Monster customer service through their official weblloc web o la informació de contacte que es proporciona a la documentació del producte.
Official Monster Weblloc: www.monsterproducts.com





