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Humming, buzzing or rattling noise heard from product | Bose QuietComfort Ultra Headphones (2nd Gen)
What type of noise is heard?
A humming or buzzing noise
Make sure the connected device is grounded.
When connected to or charging from an ungrounded device, such as a computer or TV or USB wall charger, it is possible for the headset to produce a humming sound. If possible, disconnect the device from power to eliminate this noise when listening, or find a grounded power outlet.
Unplug and reconnect the audio cable in the connected device.
On the connected device, disconnect the cable that connects your headset. Then, reconnect it to be sure it is fully connected and secure. (Tip: While connected, if you rotate the plug in the jack and hear crackling or intermittent sound, there might be debris or an issue with a contact inside the jack.)
Check the condition of the headphone cable.
If the plug or any part of the cable is damaged, replace the headphone cable.
Reboot your headphones.
This reset will not erase your product settings.
- If the USB charging cable or audio cable is connected to your headphones, disconnect it.
- Connect a USB charging cable and charger to a power outlet. You can also connect the USB cable to a USB port on a computer that is powered on.
Note: Do not connect your headphones to the USB cable yet. - On your headphones, press and hold the Power/Bluetooth® button.
- While continuing to hold the button, connect the USB cable to the right earcup. The Power light on your headphones will quickly blink twice.
- Once connected, wait two seconds and then release the Power/Bluetooth button.
Tip: If your headphones don't respond after this, reset them a second time.
A rattling sound
Determine if the rattle is from your product components of from audio playback.
If the rattle seems to come from the sound produced by your product speakers, see Poor sound quality from product. If the rattling occurs when the product is moved, check for any visible damage or loose parts.
Be sure the rattling noise is not coming from the connected device.
Loose components inside the connected device may rattle when used. Contact the device manufacturer for further help if this is the case.
