1. Ifihan
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. Package Awọn akoonu
Jọwọ rii daju pe gbogbo awọn nkan ti a ṣe akojọ rẹ si isalẹ wa ninu package rẹ:
- beyerdynamic DT 990 Pro X Studio Headphones
- 3.0 m Mini-XLR Cable (3.5 mm Jack Plug)
- 6.35 mm Jack Adapter
- Drawstring Bag

Image 2.1: All components included in the beyerdynamic DT 990 Pro X package: headphones, detachable cable, adapter, and carrying bag.
3. Eto
3.1 Nsopọ USB
- 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 Lilo akọkọ
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. Awọn ilana Iṣiṣẹ
4.1 Wọ Awọn Agbekọri
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 Awọn ẹrọ ibaramu
The DT 990 Pro X headphones are compatible with a variety of audio devices, including:
- Laptops and Desktops
- Audio Interfaces and Mixers
- Smartphones and Tablets (with appropriate adapters if needed)
- Awọn console ere
- Smart Speakers and Televisions
5. Itunu ati Fit
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.

Aworan 5.1: alaye view of the ergonomically designed headband and soft velour ear pads, highlighting comfort features.
6. Itọju
6.1 Ninu
Lati ṣetọju igbesi aye gigun ati mimọ ti awọn agbekọri rẹ:
- Mu ese ita pẹlu asọ ti o gbẹ.
- The velour ear pads can be carefully removed and hand-washed with mild soap and water, then air-dried completely before reattaching.
- Yẹra fun lilo awọn kẹmika lile tabi awọn afọmọ abrasive.
6.2 Ibi ipamọ
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 Replaceable Components
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.

Àwòrán 6.1: Àwòrán inú view of the earcup, illustrating the design for replaceable components, emphasizing the product's repairability.
7. Laasigbotitusita
If you encounter issues with your DT 990 Pro X headphones, please refer to the following common solutions:
- Ko si Ohun:
- Rí i dájú pé okùn náà so mọ́ agbekọri àti orísun ohùn náà dáadáa.
- Ṣàyẹ̀wò ìpele ohùn lórí orísun ohùn rẹ kí o sì rí i dájú pé kò sí ohùn tí ó pa lẹ́nu mọ́.
- Test the headphones with a different audio source or device to rule out source issues.
- Ohun Yiyi:
- Reduce the volume level on your audio source.
- Ṣe idaniloju ohun ohun file or stream is of good quality.
- Check for any loose connections in the cable.
- Ibamu ti korọrun:
- 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. Awọn pato
| Orukọ awoṣe | DT 990 Pro X |
| Nọmba Awoṣe Nkan | BD1001629 |
| Gbigbe Eti | Lori Eti |
| Fọọmù ifosiwewe | Lori Eti |
| Asopọmọra Technology | Ti firanṣẹ |
| Ipalara | 48 ohm |
| Iwọn Igbohunsafẹfẹ | 5 - 40,000 Hz |
| Audio Driver Type | Dynamic Driver (STELLAR.45) |
| Ariwo Iṣakoso | Sound Isolation (Open-back design) |
| Awọn agbekọri Jack | 4-pin XLR (detachable cable) |
| Ohun elo | Fabric (ear pads) |
| Iwọn Nkan | 292 Giramu (10.3 iwon) |
| Ọja Mefa | 7.87 x 7.87 x 7.87 inches |
| Olupese | Beyerdynamic |
| Ilu isenbale | Jẹmánì |
9. Atilẹyin ọja ati Support
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 webojula tabi kan si wọn onibara iṣẹ Eka.





