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FAQ

• What is Sennheiser's stance on "Burn In" Theory?

  At Sennheiser we do not have an official stance regarding the theory that headphones need a "burn in" period. Sennheiser headphones are designed to sound great from the first moment they are plugged in.

  Some argue that over period of time a user will become more accustomed to the particular headphones.  With this, they will start to notice more of the frequency response range and nuances that the headphones are capable of producing. This argument suggests that over time a user will develop a greater appreciation of the headphones and what they are capable of.

  For additional information regarding the theory of "burn in" there is plenty of discussion at Head-Fi.org (http://www.head-fi.org).

  
  
  
• Why do the speakers shut off when I connect my headphones to the headphone port?

  A connection to the headphone jack of any audio component (ie: TV, A/V receiver, computer, etc) will automatically disable the speakers.

  If you need the speakers active so others can be enjoying the same audio we recommend connecting your headphones to the audio outputs (ie: RCA outputs, digital optical audio output, digital coaxial audio out, etc) of the audio component rather than the headphone output.

  
  
  
• Sound in only one ear or general sound issues.

  If the headphones have sound in only one ear or differing sound levels in each ear or the sound in general is not what you expected then it needs to be determined where the issue lies - with the headphones or with the audio source.

  The first thing to do is ensure that you have the audio plug of the headphones connected securely into the audio device. A properly connected cable should not wiggle. If the plug wiggles that could indicate a loose connection. NOTE: This could be a result of the cable not being plugged all the way in or it could be a faulty input or sometimes if the device you are connecting to has a case on it the case will prevent the cable plugging in correctly.

  The next thing to do is to check and make sure that there is no debris (ie: no dust or lint) in the headphone jack of the audio source that may be inhibiting connectivity and causing sound issues.

  The next thing to do is to check that the connecting jack is clean. If oils from the hands gets builds up on the plug or sweat evaporates on the plug the salts and grime may prevent proper contact from occurring. The connecting jacks can be cleaned using a basic alcohol wipe.

  The next thing to do is to try the headphones on a different audio source to check that it is not the original audio source (or a setting on the audio source) that is creating the issue. If you connect to an alternate audio source and the issue is not there then you know the headphones are fine and the original audio source is the issue. NOTE: Many modern audio devices have audio limit pre-set at the factory and these limit need to be changed to get the full audio signal out of the device and to the headphones.
  
  
• Are the ear pads and headband band padding and cable replaceable?

  Yes & No. Sennheiser offers replacement ear pads. The headband padding and cable are not offered as a replacement part.

  
  
  
• Are the ear pads of the HD 200 PRO real leather or leatherette?
  The ear pads of the HD 200 PRO are made of a synthetic leatherette.