If your earbuds won’t perform the personalization process
Check our Fitting your earbuds guide in Basic part to ensure you have the correct fit. link
Make sure your earbuds is sitting securely in your ears, remove any accessories which sit near your ears, and if you have long hair, tie it back.
Check there are no obstructions blocking the mesh e.g. wax build up, packaging remnants etc. Any blockages will impact the ability of the Denon PerL to detect your hearing.
Make sure you’re in a quiet place, sit still and try not to talk during personalization.
Check you have a stable internet and Bluetooth connection.
Check your mobile device and the Denon Headphones app have been updated to the latest version.
Further troubleshooting:
‘Forget’ your Denon PerL from your device's Bluetooth settings, and pair again.
Reset the device you are trying to connect to.
Delete and reinstall the Denon Headphones app.
Reset your earbuds.
Clean your earbuds.