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The earbud headphones use left and right simultaneous Bluetooth® transmission method. This means the Bluetooth connection stability is improved compared to more conventional headphones. However, intermittent audio, or no audio may occur under the following situations:
In a location where the Wi-Fi® signal is inconsistent, such as on a train, an airport, or rail station
When using in an environment with a congested Wi-Fi signal, near to other wireless audio devices using Wi-Fi, microwaves, phones.
Follow these troubleshooting steps to resolve the sound issues:
For WF-1000XM4 or WF-1000XM3
Update the headset software to the latest version using the Sony | Headphones Connect app. For more details, visit the product page of the headset on the Sony Support website.
Reconnect your headphones to the Bluetooth® device.
Place the earbud headphones in the charging case and then close the lid.
After a few seconds, remove them from the charging case and then reconnect with the Bluetooth device.
Set the Sound quality mode to Priority on stable connection.
Launch the Sony | Headphones Connect app.
Set the Sound quality mode to Priority on stable connection.
For WF-XB700 only
If your Bluetooth device is a Walkman or Android smartphone, set the sound quality mode to Priority on stable connection mode. If you can select the audio codec on your Bluetooth device, first try to set it to AAC, and if that isn't available, then set it to SBC.
Notes:
For LDAC supported models: When you play music using the LDAC codec, set the Bluetooth Connection Quality to Priority on Sound Quality. If the music source device has the Wireless Playback Quality to LDAC - Connection Preferred setting option, use that setting to stabilize the connection.
The earbud headphones do not support the use of the Sony | Headphones Connect app, so you can't use that app to set the sound quality mode.
Depending on the connected device, you may not be able to change the settings. Refer to the Bluetooth device manual for details on how to change the settings.
Because sound may cut out if there's wireless interference, turn off other nearby wireless devices.
The human body can block the antenna of the Bluetooth device causing sound to cut out. To avoid this, bring your headphones closer to your Bluetooth device.
Close all apps you aren't using and then re-start the Bluetooth device.
When you are listening to music using your computer and the sound cuts out, close all unnecessary applications and windows, and then restart your computer.
Update the software of the Bluetooth device. Check the support page for how to update your Bluetooth device.
If your Bluetooth device is listed below, make sure that the software is updated to the specified firmware version.
Digital Music Player
Model Name
Software Version
DMP-Z1
1.02 or later
Walkman
Model Name
Software Version
NW-WM1A
NW-WM1Z
3.02 or higher
NW-ZX300
NW-ZX300G
2.02 or higher
NW-A55
NW-A55HN
NW-A56HN
NW-A57
NW-A55W
1.02 or higher
Notes:
When the Noise Canceling function is set to on, you may hear white noise, a small electrical noise with continuous static sound. The white noise is generated because of the characteristics of the Noise Canceling function. This isn't a malfunction of the headset. If you are bothered by the white noise, use the headset with the Noise Canceling function OFF.
When you use the headset while walking or running, vibration may be heard, linked with the body movements. This is due to the characteristic of the headset combined with the vibration of the movement and isn't a malfunction.
When the Noise Canceling function is set to ON, or the Ambient Sound Control is set to ON, the wind noise may be louder depending on the usage conditions. If this is the case, check the following:
WF-1000XM4: In the Sony | Headphones Connect app, tap Sound → Ambient Sound Control, and then select Automatic Wind Noise Reduction. If you are bothered by wind noise even though the Automatic Wind Noise Reduction is enabled, set the Noise Canceling function and the Ambient Sound Mode to OFF.
Notes:
When the headphones detect wind over a certain amount of air volume the Automatic Wind Noise Reduction feature turns off some of the microphones used for noise canceling. You will notice that the Noise Canceling function becomes weaker in a windy environment with this setting. This is not a malfunction.
The Automatic Wind Noise Reduction feature will not start working with only a slight amount of wind.
WF-1000XM3: Move the slide bar to Wind Noise Reduction in the Ambient Sound Control setting. If the wind noise isn't reduce sufficiently, turn off the Noise Canceling function and Ambient Sound Control settings.
WF-1000XM5, LinkBuds S, WF-SP800N: Turn off the Noise Canceling function and Ambient Sound Control settings.
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