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First, carefully remove the existing ear cushion by gently lifting it from the housing at its top position with two fingers, then pulling it forward and repeating this step by step downwards. 

Can I use my Teufel headphones as a headset for making phone calls?

Most Teufel headphones have at least one integrated microphone. If your headphones are connected to your smartphone via Bluetooth or cable with a microphone (usually located in the integrated remote), you can use them as a headset for phone calls.

What happens to the music when a call comes in?

When a call comes in, music playback is automatically interrupted/paused and resumed after the call.

How do I answer calls directly through headphones or earbuds?

You can accept, reject, hold, retrieve, or end the call directly on your smartphone.

You can also accept, reject, or end calls directly using the buttons on the headphones or earbuds. Detailed instructions for button and touch controls can be found in the Quick Start Guide or the user manual  for your Teufel product. 

Here are tips to solve Bluetooth problems with your headphones and establish a stable connection.

The most common problems with headphones are: 

• One side is defective, too quiet, or distorted.
• Bluetooth connection problems
• No sound
• Battery not charging
• Background noise / hissing / crackling
• visible damage

This article will help you identify possible causes and thus solve the problem. 

If you discover a defect, have unsuccessfully gone through the checklists, and the instructions for your product do not help, please contact us. 

Since iOS 14 and later, iPhones have featured automatic volume monitoring .
This monitoring is designed to protect your hearing by reducing the maximum volume after a certain period of use.

However, this otherwise useful feature could be misleading and might lead you to suspect a problem with your headphones if you don't recognize the automatic volume adjustment as such. The monitoring can be configured and, at your own risk, completely disabled. Please test whether this iPhone feature is limiting the maximum volume of your Teufel headphones before reporting a defect.

For more information about automatic volume monitoring, please visit the relevant Apple support pages for your iPhone model.

This article provides possible causes and solutions if your headphones or portable device battery isn't charging. If the battery still won't charge, please contact us. 

Battery information

• If your headphones/device have been exposed to high or low temperatures, let them 
  adjust to room temperature and then try charging them again.
• The battery may be deeply discharged. Deep discharge is not normally a defect. Therefore, we recommend that you charge the device once for at least 24 hours using the supplied charging cable/power adapter to rule out any defect, even if the charging LED does not light up immediately.
• Further information on this topic:
  • 
    ROCKSTER / ROCKSTER AIR: The battery is not charging and/or is discharging very quickly. Is this a defect?
    Teufel devices with batteries - tips for proper battery charging
  • How to properly charge and maintain the battery to ensure its full lifespan and capacity are maintained can be found in our blog: Properly charging and maintaining the battery
  • Blog guide: Deep discharge: How you might still be able to save a deeply discharged battery 

Check the power supply/charging adapter.

• Is it plugged in correctly? Try using a different power outlet.
• Are both ends of the charging cable properly and securely plugged in? Try using a different charging cable.
• If your charger has been exposed to high or low temperatures, let it 
  adjust to room temperature and then try charging the battery/device again.
• If no charging adapter was included :
  • Does your charging adapter/plug provide the minimum power required by your product to operate and/or charge its battery? You can find the power specifications either in the user manual or on the product page in the online shop . USB-C charging adapters with a higher wattage output can also be used, as the product draws its power from them variably. If your charging adapter/plug provides insufficient power, try a different one.

If the wireless headphones won't charge:

Specifically designed for True Wireless (TWS) headphones with charging case:

• Make sure the headphones are correctly inserted into the charging case and correct this if necessary.
• Make sure the charging box battery is not empty. If the charging box battery is empty, recharge it.
• Check if there 
  is any protective film, dirt, or residue on the charging contacts in the case or on the headphones. Further reading > You can find more tips on cleaning headphones in our blog.

for all wireless headphones:

• Check if there is any protective film, dirt, or deposits on the charging contacts of the headphones.
• Check the charging cable and power adapter as described in this article .
• If your headphones have been exposed to high or low temperatures, let them adjust to room temperature and then try charging them again.
• If you suspect a defect in your headphones, the guide " My headphones are defective - what to do?" will help you .

If, after following the instructions above, it turns out that your device's battery is defective, please contact us 

 

As a general rule : Headphones – just like loudspeakers – can only reproduce the sound quality that the source device provides.  

There are several options for optimizing the sound of headphones on a smartphone: 

• Your smartphone's audio settings 
• the audio options within your streaming service or music player app
• special equalizer apps. 

Smartphone: Audio settings for Android and iOS 

On an Android
smartphone, you can adjust the sound by using the built-in audio amplifier. You can find this in the settings under Accessibility – if not, simply search for and download it from the Play Store. 

The audio amplifier is designed to emphasize relevant sounds such as conversations and to reduce background noise when using headphones with a smartphone. 

Fine-tuning is possible via sliders. However, the audio amplifier is less suitable for music – for that, there's the system's built-in equalizer. This allows you to select a sound profile or adjust the controls manually. However, it offers only basic options and isn't available on every Android smartphone. 

Apple

Apple offers the option to adjust settings for certain headphone models on the iPhone. To do this, activate Headphone Adjustments under "Audio/Visual" in the Accessibility settings. You can choose between "Phone" and "Media," depending on whether you want to adjust the sound for calls or for music, videos, podcasts, etc. Audio samples will then be played to configure the audio settings. 

iOS also includes a simple equalizer – to access it, go to "Music" in Settings and then to "EQ". There you can choose from a range of preset profiles.   

 

Improve the bass and sound in the music player app 

Depending on which app you use to play music, you'll find various audio options that allow you to fine-tune the sound output. Every good playback app includes an equalizer and other basic settings. For example, you can turn preamplification on or off, select specific playback effects, or adjust the treble and bass. Even a small change to the equalizer settings can have a significant effect. For instance, the bass can be noticeably boosted this way.

To achieve even better sound, you can use different presets. There are usually sound profiles for different music styles. Try them out to see what sounds best to you. 

It is also possible to manually adjust the controls for the individual frequency levels. However, this can make it more difficult to create an overall coherent sound.   

Other options might include : 

• Bass enhancement 
• Balance adjustment between left and right stereo channels 
• Hall effects 
• virtual surround sound 
  

Audio settings options in music streaming apps

Music streaming services also offer various ways to improve the headphone sound on your smartphone. The first thing to consider is audio quality. On Spotify , for example, you'll find the relevant selection in the settings under "Sound quality." There you can choose between different quality levels – the highest level, available only to subscribers, currently (October 2021) corresponds to a bitrate of 320 kbps. If you want significantly more, you can switch to a Hi-Res streaming service like TIDAL or Qobuz , or wait for Spotify HiFi (launch date not yet known). Deezer HiFi (FLAC quality) is already available. 

Some apps (including Spotify and Deezer) have built-in equalizers. You can activate the Deezer tool, for example, in the service's audio settings. It offers sound profiles as well as a custom option. However, similar to Spotify's equalizer, the customization options are limited. 

Improve smartphone sound with an equalizer app 

If the options in your music player app or streaming service aren't sufficient, use a separate equalizer app. There's a wide selection available for both Android and iOS . The quality of a particular app depends primarily on whether you like its usability, sound profiles, spatial effects, and features. Some apps require a paid premium version for these features. 

Because manufacturers are aware of the potential for in-ear headphones to become dirty, replacement ear tips are included and also sold separately. However, those who don't want to buy replacements regularly can easily clean the in-ear headphones themselves with a little care.

To do this, remove the ear tips, i.e., the rubber or silicone cushions that tend to get dirty most often, for example with earwax. These can then be cleaned thoroughly with soap and water; stubborn dirt can be removed with cotton swabs or toothpicks.

If any dirt has gotten onto the grille or even through it, try blowing it off. Alternatively, you can use a small amount of compressed air or a cold hairdryer on its lowest setting. If that doesn't work, stick a piece of adhesive tape on it and try to remove the dirt along with the tape. Once everything is clean, and especially if the earpieces are dry after wet cleaning, you can put them back on the earphones.

Cleaning in-ear headphones is therefore not nearly as complicated as it seems. To prevent contamination in the first place, you can gently wipe the headphones with a clean cloth after each use and remove any visible dirt.