1. Introduction
Thank you for choosing the dbsono G901 Hybrid Active Noise Cancelling Headphones. These headphones are designed to provide a superior audio experience with advanced noise cancellation, deep bass, and comfortable wear for extended periods. This manual will guide you through the setup, operation, and maintenance of your new headphones.
Key Features:
- Hybrid Active Noise Cancellation (ANC): Effectively blocks ambient noise with a hybrid ANC algorithm and 4 built-in ANC microphones.
- Environmental Noise Cancellation (ENC): Ensures crystal-clear calls in noisy environments.
- Deep Bass Audio: Custom 40mm dynamic drivers deliver high-quality audio with balanced deep bass and crisp highs.
- Extended Playtime: Up to 60 hours (ANC off) or 40 hours (ANC on) on a single charge.
- Comfort & Portability: Ultra-soft protein leather ear cushions, adjustable headband, and foldable lightweight design.
- Dual Connectivity: Seamlessly connect to two devices via Bluetooth 5.4.
- Transparency Mode: Allows you to hear your surroundings without removing the headphones.
- Wired Option: Includes a 3.5mm AUX cable for uninterrupted listening.
What's in the Box:
- dbsono G901 Hybrid ANC Headphones
- User Manual
- 3.5mm AUX Cable
- USB-C Charging Cable

Image 1.1: dbsono G901 Hybrid Active Noise Cancelling Headphones in Black.
2. Safety Information
Please read all safety warnings and instructions before using this product to ensure safe and proper operation.
- Hearing Protection: Avoid listening at high volume levels for extended periods to prevent hearing damage.
- Environmental Awareness: Do not use headphones in situations where the inability to hear ambient sounds may present a danger (e.g., while driving, cycling, or walking in traffic), especially when using Active Noise Cancellation.
- Battery Care: Do not attempt to replace the battery yourself. Do not expose the headphones to excessive heat, direct sunlight, or fire. Dispose of batteries according to local regulations.
- Cleaning: Clean the headphones with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- Water Resistance: These headphones are not water resistant. Avoid exposure to liquids.
3. Product Overview
Familiarize yourself with the components and controls of your dbsono G901 headphones.
Headphone Components:
- Ear Cups: Over-ear design with ultra-soft protein leather cushions. Clearly marked 'L' for left and 'R' for right.
- Adjustable Headband: For a personalized and comfortable fit.
- Control Buttons: Located on the right ear cup for power, volume, track control, and ANC/Transparency mode.
- Built-in Microphone: For clear hands-free calls.
- USB-C Charge Port: For charging the headphones.
- 3.5mm AUX Input: For wired audio connection.
- Indicator Light: Displays power, pairing, and charging status.

Image 3.1: Diagram illustrating the control buttons and ports on the dbsono G901 headphones.

Image 3.2: Diagram demonstrating the correct way to wear the dbsono G901 headphones, showing adjustment of the headband.
4. Setup
4.1 Charging the Headphones
Before first use, fully charge your headphones. A full charge takes approximately 3 hours.
- Connect the USB-C end of the charging cable to the USB-C port on the headphone.
- Connect the USB-A end of the charging cable to a compatible USB power source (e.g., wall adapter, computer USB port).
- The indicator light will show charging status (refer to the control diagram for indicator light location).
4.2 Bluetooth Pairing
Pair your headphones with your Bluetooth-enabled device.
- Ensure the headphones are powered off.
- Press and hold the Power button for approximately 3 seconds until the indicator light flashes blue and red, indicating pairing mode.
- On your device, enable Bluetooth and search for available devices.
- Select "DB G901" from the list of available devices.
- Once connected, the indicator light will turn solid blue or flash blue slowly.
4.3 Wired Connection (3.5mm AUX)
For a wired connection, use the included 3.5mm AUX cable.
- Plug one end of the 3.5mm AUX cable into the AUX input port on the headphone.
- Plug the other end into the 3.5mm audio jack of your device.
- The headphones will automatically switch to wired mode.
5. Operating Instructions
Control your audio and calls using the buttons on the right ear cup.
5.1 Power On/Off
- Power On: Press and hold the Power button for 2 seconds.
- Power Off: Press and hold the Power button for 3 seconds.
5.2 Active Noise Cancellation (ANC) & Transparency Mode
- ANC On (Default): Single press the NC button.
- ANC Off: Single press the NC button again.
- Transparency Mode: Single press the NC button a third time to activate.

Image 5.1: The dbsono G901 headphones feature advanced Hybrid ANC technology to block out ambient noise.

Image 5.2: Transparency Mode allows users to hear their surroundings while wearing the headphones.
5.3 Music Playback
- Play/Pause: Single press the Play/Pause button.
- Volume Up: Single press the '+' button.
- Volume Down: Single press the '-' button.
- Next Track: Long press the '+' button for 2 seconds.
- Previous Track: Long press the '-' button for 2 seconds.

Image 5.3: Equipped with 40mm dynamic drivers, the G901 headphones deliver high-quality audio with deep bass.
5.4 Call Management
- Answer/End Call: Single press the Call button.
- Reject Call: Long press the Call button for 2 seconds.
- Activate Siri/Voice Assistant: Double press the Call button.
5.5 Wearing the Headphones
Adjust the headband for a comfortable and secure fit. The ear cups are designed to fully cover your ears.

Image 5.4: The adjustable headband and soft ear cushions ensure all-day comfort.
6. Maintenance
Proper care will extend the life of your headphones.
- Cleaning: Wipe the ear cups and headband with a soft, slightly damp cloth. Do not use solvents or harsh cleaning agents.
- Storage: When not in use, store the headphones in a cool, dry place. The foldable design allows for compact storage, protecting them from damage.
- Battery Longevity: To maintain battery health, avoid fully discharging the headphones frequently. Charge them regularly, even if not in constant use.

Image 6.1: The compact, lightweight, and foldable design makes the headphones ideal for travel and easy storage.
7. Troubleshooting
If you encounter any issues, refer to the following common problems and solutions:
- No Power: Ensure the headphones are charged. Connect to a power source using the USB-C cable.
- Cannot Pair via Bluetooth: Make sure the headphones are in pairing mode (flashing blue/red light). Check your device's Bluetooth settings and ensure "DB G901" is selected. Try turning Bluetooth off and on again on your device.
- No Sound: Check the volume levels on both the headphones and your connected device. Ensure the headphones are properly paired or the AUX cable is securely connected.
- Poor Sound Quality: Ensure the headphones are within Bluetooth range (up to 10 meters). Check for interference from other wireless devices. If using a wired connection, ensure the cable is not damaged.
- ANC Not Working Effectively: Ensure the ear cups form a good seal around your ears. Adjust the fit if necessary.
8. Specifications
| Feature | Specification |
|---|---|
| Model Name | DB G901 |
| Noise Control | Hybrid Noise Cancellation, Transparency Mode |
| Connectivity Technology | Wired, Wireless (Bluetooth 5.4) |
| Bluetooth Range | 10 Meters |
| Audio Driver Type | Dynamic Driver (40mm) |
| Battery Life | Up to 60 Hours (ANC off), 40 Hours (ANC on) |
| Charging Time | 3 Hours |
| Headphones Jack | 3.5 mm Jack |
| Input Device Interface | USB C Cable |
| Item Weight | 9.8 ounces (278 Grams) |
| Product Dimensions | 7.09 x 5.91 x 1.38 inches |
| Material | Leather, Metal, Plastic, Sponge |
9. Warranty & Support
Your dbsono G901 headphones come with a 24-month warranty from the date of purchase, covering manufacturing defects.
Customer Support:
For technical assistance, warranty claims, or any questions regarding your product, please contact dbsono customer support:
- Phone: 1-833-833-2013 (US) - Mon-Fri 9AM-5PM (PST)
- Email: support@dbsono.com (Global)
- Website: dbsono.com
Video 9.1: Official dbsono G901 Headphones Overview. This video provides a visual guide to the product's features and unboxing experience.