Sound issue

Nothing Headphone (a) has been acoustically tuned by Nothing based on extensive user testing and delivers competitive sound quality. However, sound perception can vary between users.

Please first ensure the headphones are worn correctly and that the ear cushions form a proper seal. If the fit is optimal, we recommend opening the Nothing X app, navigating to the EQ section, and selecting a preset sound profile or creating a custom EQ.

If you notice distortion or noise, please ensure that any EQ settings in your music playback app are disabled to avoid conflicts.

Nothing Headphone (a) supports Active Noise Cancellation (ANC) with a maximum depth of 40 dB. We recommend opening the Nothing X app and navigating to Noise Control to check your ANC settings. Available modes include High/Mid/Low/Adaptive.

Please also ensure the ear cushions fit snugly around your ears. An improper seal can reduce air-tightness and significantly affect noise cancellation performance.

This is often the case with over-ear headphones.

Wired audio doesn't support absolute volume control. To ensure maximum output on the headphones, the wired audio default volume is set to 100%. After connecting with a wired cable, you need to manually adjust the volume to a comfortable level.

Bluetooth audio supports absolute volume control, allowing quicker volume adjustments, so its default volume is set around 50%. You can also adjust the volume using the headphones’ roller or the device’s volume buttons to adjust to your preferred level.

1. CMF Headphone Pro doesn't support USB audio for music playback.
2. When using the 3.5mm aux-in audio cable, volume can't be adjusted using the headphones’ roller and can only be controlled via the connected device’s volume buttons. This is often the case with over-ear headphones and does not indicate a problem with CMF Headphone Pro.

Please note that if a non-standard aux-in cable (such as a 4-pole one) is used, there may be no sound output. We recommend using the official aux-in cable.

1. CMF Headphone Pro doesn't support USB audio for music playback.
2. The 3.5mm aux-in audio cable allows you to listen to music only. Please note that CMF Headphone Pro uses a three-segment 3.5mm aux-in which does not support microphone input.

Please note that if a non-standard aux-in cable (such as a 4-pole one) is used, there may be no sound output. We recommend using the official aux-in cable.

The sound quality of the CMF Headphone Pro has been tuned based on extensive user feedback. It is considered to be at a relatively high level within the industry. However, we understand that audio perception can vary between users.

Please first ensure that the headphones are worn correctly with a proper seal, as a poor fit can significantly affect sound quality. If the fit is good but you’re still not satisfied, we recommend downloading the Nothing X app. Within the app, go to the Equaliser section where you can try different preset sound profiles or create your own custom EQ settings to better match your listening preferences.

A delay in audio output may occur during music channel switching or connection snatching in Dual Connection mode. This is due to compatibility issues related to Bluetooth connection priority and Dual Connection functionality on some devices. It's a common issue with over-ear Bluetooth headphones across the market, so doesn't indicate a problem with CMF Headphone Pro.

We recommend directly connecting the headphones to the device you want to use, and closing background audio apps on other connected devices.

CMF Headphone Pro supports Active Noise Cancellation (ANC) with a maximum depth of 40dB. We recommend downloading the Nothing X app and navigating to Noise Control to check your ANC settings. The app offers multiple options including High / Mid / Low / Adaptive modes.

Please also ensure that the ear cushions are properly sealed around your ears. A poor fit can affect the air-tightness and significantly reduce noise cancellation performance.

The sound quality of Ear (3) is tuned based on extensive user experiences and is at a relatively high industry standard. Download the Nothing X app and access the Equaliser page to choose from preset sound effects or customise to your personal preferences in the Custom settings.

Due to compatibility issues with Bluetooth Fast Pair and Dual Connection of some device systems, there may be occasional delays in sound output when you switch music channels or try to connect your device. Please rest assured this doesn't indicate any fault with Ear (3).

Ear (3) supports Active Noise Cancellation (ANC) up to 45 dB. We recommend downloading the Nothing X app and checking the ANC settings under Noise Control. This setting offers multiple options such as High, Mid, Low and Adaptive.

Improper fitting of the ear tips can affect the noise cancellation seal, resulting in poor or ineffective noise cancellation. We suggest trying different ear tips to find the best fit for optimal noise cancellation.

For more precise adjustments and settings, please use the Nothing X app, available on Google Play and the iOS App Store.

The Nothing headphone (1) uses a three-segment 3.5mm jack that does not support microphone input, so MIC calls are not available via the Aux-In connection.

The sound quality of CMF earbuds is tuned based on extensive user experiences and is at a relatively high industry standard. However, individual preferences for sound quality may vary. We recommend downloading the Nothing X App and accessing the Equaliser page to choose preset sound effects. Additionally, you can customise the sound according to your personal preferences in the Custom settings.

The sound quality of Ear (open) is based on extensive user experiences, at a relatively high industry standard. However, individual preferences for sound quality may vary. We recommend downloading the Nothing X App and accessing the Equaliser to choose preset sound effects. Additionally, you can customise the sound according to your personal preferences in the Custom settings. For an optimal sound experience, ensure you're not in a noisy environment as Ear (open) doesn't support ANC.

Due to compatibility issues with Bluetooth Fast Pair and Dual Connection of some device systems, there may be occasional delays in sound output when you switch music channels or try to connect your device. Please rest assured this doesn't indicate any fault with Ear (open).

The sound quality of CMF Buds Pro 2 is tuned based on extensive user experiences and is at a relatively high industry standard. However, individual preferences for sound quality may vary. We recommend downloading the Nothing X App and accessing the Equalizer page to choose preset sound effects. Additionally, you can customise the sound according to your personal preferences in the Custom settings.

CMF Buds Pro 2 supports active noise cancellation (ANC) up to 50dB. We recommend downloading the Nothing X app and checking the ANC settings under Noise Control. This setting offers multiple options such as "High," "Mid," "Low," and "Adaptive."

We also advise that improper fitting of the ear tips can affect the noise cancellation seal, resulting in poor or ineffective noise cancellation. The earbuds come with different sizes of ear tips. We suggest trying different ear tips to find the best fit for optimal noise cancellation.

For more precise adjustments and settings, please use the Nothing X app, available on Google Play and the iOS App Store.

Due to the compatibility of some Bluetooth connections, there will be a sound delay with certain devices.
If you have any further concerns, please contact Nothing Customer Service.

Make sure in-ear detection is enabled. If this is off, Bass lock will be disabled.

1. Check the volume settings. The connected device may have been muted, resulting in you being unable to hear any sound from your Ear (stick). If so, adjust the volume to an appropriate level.
2. Check whether this issue persists with other apps. If not, adjust the sound settings under the specific app settings.
3. Disconnect your Ear (stick) from your device. Place your Ear (stick) back into the charging case, close the charging case and open it after 5 seconds, and then connect your Ear (stick) to device again. If the issue cannot be resolved, take your device and proof of purchase to an authorised Nothing Service Centre for assistance.

1. Check if the noise persists with other apps. If not, it is caused by the app compatibility.
2. The audio file quality or media player performance may cause this issue. Switch to another file or audio source to confirm. If the issue cannot be resolved, take your device and proof of purchase to an authorised Nothing Service Centre for assistance.