Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your JBL Tune 670NC Adaptive Noise Cancelling Wireless On-Ear Headphones. Please read this manual thoroughly to ensure proper use and to maximize your listening experience.
What's in the Box
Upon unboxing your JBL Tune 670NC headphones, please verify that all components are present:
- 1 x JBL Tune 670NC headphones
- 1 x USB-C Charging Cable
- 1 x Detachable audio cable
- 1 x Quick Start Guide (QSG)
- 1 x Warranty/Warning document

Image: A pair of purple JBL Tune 670NC on-ear headphones, showcasing their design and color.
Product Overview and Controls
Familiarize yourself with the physical components and controls of your headphones.

Image: Close-up view of the right earcup of the JBL Tune 670NC headphones, showing the control buttons for volume, playback, and power/pairing.
- Power Button: Located on the earcup, used for turning the headphones on/off and initiating Bluetooth pairing.
- Volume Up/Down Buttons: Adjusts the audio volume.
- Multi-function Button: Controls playback (play/pause, skip tracks) and call management.
- ANC/Ambient Aware Button: Toggles between Adaptive Noise Cancelling, Ambient Aware, and TalkThru modes.
- 3.5mm Audio Jack: For wired connection using the detachable audio cable.
- USB-C Charging Port: For charging the headphones.

Image: A diagram illustrating the difference between In-Ear, On-Ear, and Over-Ear headphone designs. The JBL Tune 670NC are an On-Ear design.
Setup
Charging the Headphones
Before first use, fully charge your headphones. A full charge takes approximately 2 hours.
- Connect the provided USB-C charging cable to the charging port on the headphones.
- Connect the other end of the cable to a USB power source (e.g., computer, wall adapter).
- The LED indicator on the headphones will show charging status and turn off when fully charged.
A 5-minute speed charge provides approximately 3 hours of playback.

Image: White JBL Tune 670NC headphones with text highlighting "Up to 70H Battery Life with Speed Charge".
Bluetooth Pairing
To connect your headphones to a Bluetooth-enabled device:
- Ensure the headphones are powered off.
- Press and hold the Power button for approximately 5 seconds until the LED indicator flashes blue, indicating pairing mode.
- On your device, enable Bluetooth and search for available devices.
- Select "JBL Tune 670NC" from the list.
- Once connected, the LED indicator will turn solid blue.
The headphones utilize Bluetooth 5.3 technology for stable wireless streaming up to 10 meters.
Multi-Point Connection
The JBL Tune 670NC supports multi-point connection, allowing you to connect to two Bluetooth devices simultaneously. This feature enables seamless switching between devices, for example, from watching a movie on a tablet to answering a call on your smartphone.
- Pair the headphones with the first device as described above.
- Put the headphones into pairing mode again (press and hold Power button).
- Pair with the second device.
- The headphones will now be connected to both devices. Audio will automatically switch to the device receiving a call or playing media.
Operating the Headphones
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.
Adaptive Noise Cancelling and Smart Ambient
The JBL Tune 670NC features Adaptive Noise Cancelling (ANC) to minimize distractions and Smart Ambient technology to keep you aware of your surroundings.

Image: A person wearing black JBL headphones in an urban setting, illustrating the use of Adaptive Noise Cancelling and Smart Ambient features.
- Adaptive Noise Cancelling (ANC): Reduces external noise for focused listening. Activate via the dedicated button on the earcup or through the JBL Headphones app.
- Ambient Aware: Allows you to hear your surroundings without removing your headphones, useful for safety or awareness. Activate via the dedicated button or app.
- TalkThru: Lowers music volume and amplifies speech, enabling quick conversations without removing headphones. Activate via the dedicated button or app.
JBL Pure Bass Sound
Experience the renowned JBL Pure Bass Sound, delivering powerful and clear audio quality for all your music.

Image: A person wearing white JBL headphones, enjoying music, with text indicating "JBL Pure Bass Sound".
Customizing with JBL Headphones App
Download the free JBL Headphones App to personalize your listening experience:
- Tailor the sound with pre-set EQ modes or custom EQ adjustments.
- Manage Ambient Sound Control modes (ANC, Ambient Aware, TalkThru).
- Receive voice prompts in your preferred language.
Hands-free Calls with VoiceAware
Manage calls directly from your headphones using the convenient buttons on the earcup. VoiceAware technology allows you to hear your own voice during calls, enhancing the conversation experience.
Smart Audio & Video Mode
Optimize Bluetooth performance through the JBL Headphones app by selecting either:
- Audio Mode: For the best sound quality.
- Video Mode: For optimal gaming and video output, minimizing latency.
Maintenance
To ensure the longevity and optimal performance of your JBL Tune 670NC headphones:
- Clean the earcups and headband regularly with a soft, dry cloth.
- Avoid exposing the headphones to extreme temperatures, humidity, or direct sunlight.
- Store the headphones in a cool, dry place when not in use. The foldable design allows for compact storage.
- Do not attempt to disassemble or modify the headphones, as this will void the warranty.

Image: Purple JBL Tune 670NC headphones shown in their folded position, highlighting their portable and compact design.
Troubleshooting
If you encounter issues with your headphones, refer to the following common solutions:
| Problem | Solution |
|---|---|
| Headphones do not power on | Ensure the headphones are charged. Connect to a power source using the USB-C cable. |
| Cannot pair via Bluetooth | Ensure headphones are in pairing mode (flashing blue LED). Turn off and on Bluetooth on your device. Move closer to the device. |
| No sound or low volume | Check volume levels on both headphones and connected device. Ensure headphones are properly paired. Try a different audio source. |
| Noise Cancelling not effective | Ensure ANC is activated. Adjust headphone fit on your ears. |
| Call quality issues | Ensure microphone is not obstructed. Check network signal on your phone. |
Specifications
Key technical specifications for the JBL Tune 670NC headphones:
- Model Name: JBL Tune 670NC
- Connectivity: Wireless (Bluetooth 5.3)
- Noise Control: Adaptive Noise Cancellation
- Audio Driver Type: Dynamic Driver
- Frequency Range: 20 Hz – 20 kHz
- Impedance: 32 Ohm
- Battery Life: Up to 70 Hours
- Charging Time: 2 Hours (5 min for 3 hours playback)
- Bluetooth Range: 10 Meters
- Control Method: Button, Voice (Google Assistant, Siri)
- Item Weight: 174 Grams (6.1 ounces)
- Dimensions: 6.69 x 2.87 x 7.87 inches
- Included Components: Headphones, USB-C Charging Cable, Detachable Audio Cable, QSG, Warranty/Warning
Warranty and Support
Your JBL Tune 670NC headphones come with a 1-year JBL warranty, covering manufacturing defects from the date of purchase. Please retain your proof of purchase for warranty claims.
For further assistance, technical support, or warranty inquiries, please visit the official JBL support website or contact their customer service. Refer to the Quick Start Guide or Warranty/Warning document included in your package for specific contact details and warranty terms.
You can also visit the JBL Store on Amazon for more product information and accessories.





