1. Уводзіны
Thank you for choosing the beyerdynamic DT 990 Pro X Over-Ear Studio Headphones. These headphones are designed for professional audio applications, including mixing, mastering, and editing. They feature an open-back design, a dynamic STELLAR.45 driver system, and a detachable cable for enhanced versatility and durability. This manual provides essential information for the proper setup, operation, and maintenance of your headphones.

Image 1.1: The beyerdynamic DT 990 Pro X headphones, showcasing their over-ear, open-back design.
2. Змесціва ўпакоўкі
Калі ласка, пераканайцеся, што ўсе пералічаныя ніжэй прадметы ўваходзяць у ваш пакет:
- beyerdynamic DT 990 Pro X Studio Headphones
- 3.0 m Mini-XLR Cable (3.5 mm Jack Plug)
- 6.35 mm Jack Adapter
- Сумка на шнурках

Image 2.1: All components included in the beyerdynamic DT 990 Pro X package: headphones, detachable cable, adapter, and carrying bag.
3. Настройка
3.1 Падключэнне кабеля
- Locate the Mini-XLR input port on the left earcup of the DT 990 Pro X headphones.
- Align the Mini-XLR connector of the provided cable with the port and push firmly until it clicks into place.
- Connect the 3.5 mm jack plug of the cable to your audio source (e.g., audio interface, amplifier, computer).
- If your audio source requires a 6.35 mm connection, attach the included 6.35 mm jack adapter to the 3.5 mm jack plug.

Image 3.1: A hand connecting the detachable Mini-XLR cable to the earcup of the DT 990 Pro X headphones.
3.2 Першапачатковае выкарыстанне
Ensure your audio source's volume is set to a low level before placing the headphones on your head. Gradually increase the volume to a comfortable listening level. The DT 990 Pro X headphones have an impedance of 48 Ohms, making them suitable for a wide range of devices without requiring a dedicated headphone amplifier, though a high-quality amplifier can further enhance performance.
4. Інструкцыя па эксплуатацыі
4.1 Нашэнне навушнікаў
Adjust the headband so that the earcups sit comfortably over your ears, fully enclosing them. The velour ear pads are designed for extended wear. The open-back design allows for a wide soundstage and natural sound reproduction, which is beneficial for critical listening tasks.

Image 4.1: A user wearing the DT 990 Pro X headphones during an audio production session, demonstrating proper fit.
4.2 сумяшчальныя прылады
The DT 990 Pro X headphones are compatible with a variety of audio devices, including:
- Ноўтбукі і настольныя кампутары
- Audio Interfaces and Mixers
- Smartphones and Tablets (with appropriate adapters if needed)
- Гульнявыя прыстаўкі
- Smart Speakers and Televisions
5. Камфорт і пасадка
The DT 990 Pro X headphones are engineered for high comfort during long listening or working sessions. Key comfort features include:
- Ergonomically Designed Headband: Distributes pressure evenly across the head.
- Flexible Headband Construction: Ensures a secure yet comfortable fit for various head sizes.
- Soft Velour Ear Pads: Provide a gentle feel against the skin and contribute to breathability.

Малюнак 5.1: Падрабязны view of the ergonomically designed headband and soft velour ear pads, highlighting comfort features.
6. Тэхнічнае абслугоўванне
6.1 Ачыстка
Каб падтрымліваць даўгавечнасць і гігіену вашых навушнікаў:
- Працярыце вонкавыя паверхні мяккай сухой анучай.
- The velour ear pads can be carefully removed and hand-washed with mild soap and water, then air-dried completely before reattaching.
- Пазбягайце выкарыстання агрэсіўных хімікатаў або абразіўных ачышчальнікаў.
6.2 Захоўванне
When not in use, store the headphones in the provided drawstring bag to protect them from dust and scratches. Avoid exposing them to extreme temperatures or humidity.
6.3 Заменныя кампаненты
The DT 990 Pro X is designed with replaceable components, including the ear pads and headband padding, ensuring long-term usability. Contact beyerdynamic support for replacement parts.

Малюнак 6.1: Унутраны view of the earcup, illustrating the design for replaceable components, emphasizing the product's repairability.
7. Выпраўленне непаладак
If you encounter issues with your DT 990 Pro X headphones, please refer to the following common solutions:
- Няма гуку:
- Пераканайцеся, што кабель надзейна падключаны як да навушнікаў, так і да крыніцы гуку.
- Праверце ўзровень гучнасці крыніцы гуку і пераканайцеся, што яна не адключана.
- Test the headphones with a different audio source or device to rule out source issues.
- Скажоны гук:
- Зменшце ўзровень гучнасці на крыніцы гуку.
- Забяспечце аўдыё file або паток добрай якасці.
- Check for any loose connections in the cable.
- Нязручная пасадка:
- Adjust the headband to find the optimal position on your head.
- Ensure the ear pads are correctly seated around your ears.
If these steps do not resolve the issue, please contact beyerdynamic customer support for further assistance.
8. Тэхнічныя характарыстыкі
| Назва мадэлі | DT 990 Pro X |
| Нумар мадэлі тавару | BD1001629 |
| Размяшчэнне вушэй | Над вухам |
| Формаў-фактар | Над вухам |
| Тэхналогія падлучэння | Правадная |
| Імпеданс | 48 Ом |
| Дыяпазон частот | 5 - 40,000 Гц |
| Тып аўдыё драйвера | Dynamic Driver (STELLAR.45) |
| Кантроль шуму | Sound Isolation (Open-back design) |
| Гняздо для навушнікаў | 4-pin XLR (detachable cable) |
| Матэрыял | Fabric (ear pads) |
| Вага прадмета | 292 грам (10.3 унцый) |
| Памеры прадукту | 7.87 х 7.87 х 7.87 цалі |
| Вытворца | Бейердынаміка |
| Краіна паходжання | Нямеччына |
9. Гарантыя і падтрымка
beyerdynamic products are manufactured to high-quality standards. For information regarding warranty coverage, please refer to the warranty card included with your product or visit the official beyerdynamic website. For technical support, replacement parts, or service inquiries, please contact beyerdynamic customer support directly.
beyerdynamic USA
For support in the United States, please visit the beyerdynamic USA webсайт або звярніцеся ў іх аддзел абслугоўвання кліентаў.