Poor Sound Quality | Bose QuietComfort Ultra Headphones (2nd Gen)

In the Bose App, toggle multi-point on and off

If you have a multi-point connection, the secondary device could interrupt the audio stream on the primary device causing crackling, distortion or even pauses in audio.

In the Bose App, on the product main screen, tap Bluetooth Source.
Toggle the Multi-point Connection on and off.

Determine if the problem is specifically related to bass performance.

If there is too little bass, see Too little bass or too much treble from product.
If there is too much bass, see Too much bass or too little treble from product.

Static or Distortion

If you are hearing static or distortion through your earbuds or headphones, try the following steps. These issues are often caused by environmental interference or device settings and can frequently be resolved with a few adjustments:

Check for nearby electronic devices that may cause wireless interference.
Some electronics that operate on the 2.4 GHz frequency can interfere with Bluetooth signals and introduce static or distortion. Common sources include:
- 2.4 GHz Wi-Fi routers
- Cordless phones
- Wireless speaker adapters
- Home security motion sensors
- Fluorescent lighting
- Microwave ovens
- Wireless mice and keyboards
Try disconnecting or turning off these devices one at a time and check if the issue improves. If so, consider relocating your earbuds or the source of the interference to improve performance.
Check and adjust audio settings on your connected device.
Many smartphones, tablets, and computers have built-in audio enhancements like Bass Boost, Treble, or Loudness settings. These can sometimes conflict with your earbuds’ audio processing.
Go to your device’s sound settings and either turn off these features or set them to a neutral position. This allows your earbuds to apply their own optimized sound profile without interference.
Be sure the bass and treble adjustments in the Bose app are not set too high or too low for your preferences. For more info, see Using the Equalizer settings.
If needed, you can make small, gradual adjustments afterward to fine-tune your audio experience.

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 left 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.

Try a different app.

If the issue only occurs with a particular app, it is likely related to the app or app settings.

Reboot the Bluetooth® device.

Electronics, such as cell phones, tablets or computers, might need to be reset on occasion to correct minor issues. This is typically done by shutting down the device, then powering it on again.

Check the EQ settings on your Bluetooth® device.

The EQ settings of your Bluetooth device can affect sound. On the device, try setting the EQ to "off" or "flat" and disabling any other sound playback adjustments (i.e. loudness, compression, reverb, etc.). These settings are commonly found in the device's audio settings or in the settings of the app being used to play audio.

If connected, bypass any adapters or extension cables.

If your product connects to the device using an extension cable or adapter, disconnect the extension cable or adapter to determine if the issue is related to it.

Check the condition of the headphone cable.

If the plug or any part of the cable is damaged, replace the headphone cable.

Try disabling the Multi-point connection in the app

If you find that notifications from your secondary device interrupt your listening experience on your primary device, you can turn off Multi-point.
In the Bose app, go to Settings>Bluetooth Connections and toggle Multi-point connection to 'off'. This will disconnect your secondary device.

Note: You will only be able to connect to one device at a time. If you want to connect to two devices simultaneously, toggle Multi-point connection back to 'on'

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