beyerdynamic DT 770 Pro Studio Headphones (80 Ohm) - User Manual

1. Introduction

The beyerdynamic DT 770 Pro are closed-back, over-ear studio headphones designed for professional audio applications such as recording, mixing, and monitoring. This 80 Ohm version offers a balanced sound profile suitable for a wide range of studio and home listening environments. These headphones are engineered in Germany, emphasizing durability and high-resolution sound reproduction.

This manual provides essential information for the proper setup, operation, maintenance, and troubleshooting of your DT 770 Pro headphones to ensure optimal performance and longevity.

Image 1: Overview of the beyerdynamic DT 770 Pro Studio Headphones.

2. Setup

2.1 Unpacking and Initial Inspection

• Carefully remove the headphones and all accessories from the packaging.
• Verify that all included components are present: DT 770 Pro headphones, 1/4" screw-on adapter (pre-installed on 3.5mm jack), and drawstring storage bag.
• Inspect the headphones for any visible damage. If any damage is found, contact your retailer immediately.

2.2 Connecting the Headphones

1. Identify the audio output port on your device (e.g., audio interface, amplifier, computer, gaming console). This is typically a 3.5mm (1/8") or 6.35mm (1/4") jack.
2. The DT 770 Pro headphones come with a fixed 3.5mm stereo jack. A 1/4" (6.35mm) screw-on adapter is pre-installed for compatibility with larger audio ports.
3. For 3.5mm ports: Ensure the 1/4" adapter is removed by unscrewing it. Insert the 3.5mm jack firmly into your device's audio output.
4. For 6.35mm ports: Ensure the 1/4" adapter is securely screwed onto the 3.5mm jack. Insert the combined connector firmly into your device's audio output.

The 80 Ohm impedance of these headphones makes them suitable for a wide range of devices, including studio interfaces, desktop computers, laptops, and some gaming consoles. For optimal performance, ensure your audio source can adequately drive 80 Ohm headphones.

Image 2: Headphone cable with 3.5mm jack and detachable 1/4" adapter.

3. Operating Instructions

3.1 Wearing the Headphones

• Adjust the headband to fit comfortably over your head. The robust spring steel hoop provides a secure fit.
• Position the earcups so that the soft velour ear pads fully enclose your ears. This ensures proper sound isolation and comfort during extended listening sessions.

Image 3: Key comfort features including headband and ear pads.

3.2 Volume Control

Volume control is managed directly from your connected audio source (e.g., computer, audio interface, amplifier). Start with a low volume level and gradually increase it to a comfortable listening level. Avoid excessively high volumes to prevent hearing damage.

3.3 Sound Isolation

The closed-back design of the DT 770 Pro headphones provides effective sound isolation, reducing ambient noise and preventing sound leakage. This feature is crucial for accurate monitoring in studio environments and for focused listening.

Image 4: Closed over-ear design for effective sound isolation during use.

3.4 Impedance Considerations

The 80 Ohm impedance of these headphones is optimized for universal studio usage, offering versatility across various professional and consumer audio equipment. For reference, lower impedance headphones (e.g., 32 Ohms) are typically for mobile devices, while higher impedance headphones (e.g., 250 Ohms) are for professional studio consoles and audio interfaces with dedicated headphone amplifiers.

Image 5: Guide to understanding headphone impedance.

4. Maintenance

4.1 Cleaning

• Ear Pads: The velour ear pads can be gently removed for cleaning. Hand wash them with mild soap and water, then allow them to air dry completely before reattaching.
• Headband: Wipe the padded headband with a soft, damp cloth. Avoid using harsh chemicals or abrasive cleaners.
• Headphone Body: Use a dry, soft cloth to wipe down the plastic and metal parts of the headphones.

4.2 Storage

When not in use, store your DT 770 Pro headphones in the included drawstring storage bag to protect them from dust and minor impacts. Store them in a cool, dry place away from direct sunlight and extreme temperatures.

4.3 Spare Parts Service

beyerdynamic offers a spare parts service, allowing for the repair or replacement of individual components in the event of damage or wear. This ensures the long-term usability and sustainability of your headphones.

Image 6: beyerdynamic's commitment to spare part service.

5. Troubleshooting

5.1 No Sound or Intermittent Sound

• Check Connection: Ensure the headphone jack is fully inserted into the audio output port of your device. If using the 1/4" adapter, ensure it is securely screwed onto the 3.5mm jack.
• Volume Level: Verify that the volume on your audio source is turned up and not muted.
• Audio Source: Test the headphones with a different audio source or device to determine if the issue lies with the headphones or the source device.
• Cable Integrity: Inspect the headphone cable for any visible damage or kinks.

5.2 Distorted Sound

• Volume Level: Reduce the volume on your audio source. Distortion can occur if the signal is too strong or the headphones are overdriven.
• Audio Source Quality: Ensure the audio source is providing a clean signal. Poor quality audio files or streaming can result in distortion.
• Impedance Mismatch: While the 80 Ohm DT 770 Pro is versatile, some very low-power portable devices might struggle to drive them optimally, potentially leading to lower volume or slight distortion at higher levels. Consider using a headphone amplifier if your source device is underpowered.

5.3 Uncomfortable Fit

• Headband Adjustment: Re-adjust the headband to ensure it sits comfortably on your head without excessive pressure.
• Ear Pad Position: Ensure the ear pads fully encompass your ears. If ear pads are worn or flattened, consider replacing them through the spare parts service.

6. Specifications

7. Warranty and Support

7.1 Amazon Renewed Guarantee

This specific product is offered as an Amazon Renewed item. Amazon Renewed products are professionally inspected and tested to work and look like new. If you are not satisfied with your purchase, renewed products are eligible for replacement or refund under the Amazon Renewed Guarantee. Please refer to the Amazon Renewed program terms for full details regarding your specific purchase.

7.2 Manufacturer Support

For product-specific inquiries, technical assistance, or information regarding spare parts and repairs, please contact beyerdynamic customer support directly. Contact information can typically be found on the official beyerdynamic website.