Introduction
Thank you for choosing TREBLAB U5! These over-ear headphones with Hybrid Active Noise Cancellation technology provide superior sound quality and the convenience of hands-free operation.
Headphone Diagram Description
The headphones feature the following controls and ports:
- ANC button: Controls Active Noise Cancellation modes.
- VOLUME + / NEXT TRACK button: Increases volume or skips to the next track when held.
- POWER / PLAY / PAUSE button: Powers the device on/off, plays/pauses audio, answers/rejects/ends calls.
- VOLUME - / PREVIOUS TRACK button: Decreases volume or skips to the previous track when held.
- ANC MICS: Microphones for Active Noise Cancellation.
- TYPE-C PORT: For charging the headphones.
- ANC/CHARGING INDICATOR: LED indicator for ANC status and charging status.
Package Contents
- TREBLAB U5 headphones
- User's manual and quick start guide
- TREBLAB sticker
- Carrying case
- USB-C to USB-A charging cable
- USB-C to 3.5 mm AUX cable
Getting Started
Powering On/Off
- Power On: Press and hold the POWER button for 2 seconds. You will hear sound prompts, and the ANC button will flash white, indicating pairing mode.
- Power Off: Press and hold the POWER button for 3 seconds. You will hear a sound prompt, and the white light on the ANC button will turn off.
Pairing
- Ensure TREBLAB U5 headphones are charged and the AUX cable is not plugged in.
- Press the POWER button for 2 seconds. You will hear sound prompts, and the ANC button will start flashing white, indicating pairing mode.
- Activate the wireless communication function on your smart device and keep it within 3 feet (1 meter) from TREBLAB U5 while pairing.
- Scan/search for available devices on your smart device.
- Select TREBLAB U5 from the device list.
- If prompted for a password, enter "0000".
- Once successfully paired and connected, you will hear a "beep" sound prompt, and the ANC button will show a steady white light.
Multipoint Connection
The TREBLAB U5 headphones support connecting to two devices simultaneously, allowing seamless switching between them. To connect to a second device:
- Temporarily switch off the wireless mode on the first device the headphones are connected to.
- Repeat pairing steps 2-6 to connect the second device.
- Turn on the wireless communication function on the first device and connect the U5 again.
When turned on, the headphones will attempt to reconnect to the last connected devices. They can save up to the last 6 devices.
Features and Operations
Gaming Mode
TREBLAB U5 headphones support gaming mode to reduce audio latency to 60 ms, improving video/audio synchronization for gaming and video watching. To enable, double-press the POWER button (one-tone prompt, lower latency). To disable, double-press the POWER button again (two-tone prompt, standard 200 ms latency). Note: Connection range is shorter in gaming mode.
Audio Playback
- Pause/Resume Playback: Click the POWER button.
- Adjust Volume: Click the VOLUME + button to turn volume up, or VOLUME - button to turn volume down.
- Change Tracks: Press and hold VOLUME + for 1 second for the next track, or press and hold VOLUME - for 1 second for the previous track.
AUX Line-In Connection
Connect TREBLAB U5 to devices using the supplied AUX cable. Plug the Type-C end into the Type-C port on the right earcup and the 3.5 mm AUX end into your device's port. Remote control functions (NEXT, PREVIOUS, PAUSE, VOLUME) are not supported via AUX cable; use your smart device for adjustments.
ANC/Ambient Sound Modes
The headphones feature Hybrid Active Noise Cancellation. ANC mode reduces surrounding noise. Ambient Sound mode amplifies frequencies to help you hear voices. When turned on, ANC mode is enabled automatically. To switch to Ambient Sound mode, press the ANC button once. To disable both modes, press the ANC button once again.
Sound prompts for ANC modes: ANC on - "whap"; Ambient Sound - "ring-ring"; ANC off - "dong-dong". Ensure ANC microphone holes are unblocked when using these functions.
Phone Calls
TREBLAB U5 can be used for wireless phone calls; audio playback pauses during calls.
- Answer a call: Press the POWER button during an incoming call.
- Reject a call: Press and hold the POWER button for 1 second during an incoming call.
- End a call: Press the POWER button during a conversation.
Voice Assistant Activation
To use voice assistants, press and hold the ANC button for 1 second. You can then transmit voice commands using the inbuilt microphone.
Reset Memory List
To reset the headphones to factory default settings (clearing the pairing list of the last 6 devices):
- Turn the headphones on and ensure they are disconnected from any device.
- Press and hold the VOLUME + and VOLUME - buttons simultaneously for 3 seconds.
- The headphones will restart, and the device memory will be reset to factory settings.
Charging and Battery
A low battery is indicated by a sound prompt resembling a busy tone. To charge, plug the supplied cable into the Type-C charging port on the right earcup and the other end into a standard USB port. The LED indicator will turn RED while charging and BLUE when fully charged. Charging takes up to 4 hours. Use a 5V DC, 0.5-2A adapter. Using lower power sources may increase charging time. Unplug the cable when not in use. To maintain battery life, charge the TREBLAB U5 fully at least twice a month.
Troubleshooting
| Problem | Solution |
|---|---|
| Doesn't turn on | Ensure the headphones are charged (up to 4 hours). Press and hold the POWER button again for 2 seconds. |
| Music is not playing |
|
| Headphones don't pair with my device |
|
| Headphones are visible on my device, but do not connect |
|
| I cannot find a wireless driver for on my laptop | Ensure your laptop supports wireless connection. If not, you may need an external wireless USB adapter compatible with your laptop. Consult your laptop manufacturer for details. |
| Frequent disconnection and noise |
|
Safety Rules
- ✔️ Do not disassemble or modify your headphones for any reason. Doing so may cause malfunction, combustion, or void your warranty.
- ✔️ Keep dry. Liquids can cause serious damage and void your warranty. Ensure headphones are completely dry before charging.
- ✔️ Avoid extreme temperatures: Do not expose TREBLAB U5 to temperatures below 37°F (3°C) or above 112°F (45°C), as this can deform components, reduce battery life, and shorten the lifespan of your headphones.
- ✔️ Do not point LED lights close to humans' or animals' eyes.
- ✔️ Do not use during thunderstorms, as they can cause serious malfunction and increase the risk of electric shock.
FCC Statements
FCC Compliance Statement - Part 15
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
FCC Interference Statement - Part 15
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment causes harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
RF Exposure Information
The device has been evaluated to meet general RF exposure requirements. The device can be used in portable exposure conditions without restriction.
Recycling
The headphones can be recycled to help keep our planet clean. Options for recycling include:
In the US:
- https://www.call2recycle.org
- https://search.earth911.com
- https://recyclenation.com/find
- https://www.cta.tech/Consumer-Resources/Greener-Gadgets
In Canada:
- https://thinkreuse.net
- https://www.call2recycle.ca
In the UK:
- https://www.recycle-more.co.uk/
- https://www.recyclenow.com/local-recycling
Specifications
| Speaker unit: | Ø40 mm, 32Ω |
| Charging port: | USB Type-C |
| Dimensions: | 210 x 195 x 78 mm / 8.26 x 7.67 x 3.07 in |
| Weight: | 265 g / 0.58 lbs / 9.34 oz |
Warranty and Warnings
1 YEAR FULL WARRANTY (Parts & Labor Warranty)
Please visit www.treblab.com to register YOUR product. Designed by Productech in the U.S.
Made in China.
⚠️ California Warning: This product can expose you to Bisphenol A, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
Thank You
We appreciate you choosing TREBLAB as your trusted brand of wireless ANC headphones. We hope you enjoy the great sound and seamless usability of the TREBLAB U5. If you are not completely satisfied or have questions, please contact us at http://treblab.com/contact_us.
