HD 800 Frequency Response Certificate

The HD 800 headphones are hand assembled in Germany and hence each headphone has a unique frequency response.


To obtain the Frequency Response Certificate for a specific HD 800 the headphones must be registered with the Sennheiser office in Germany and once the headphones are registered then the Frequency Response Certificate will be provided.

The Frequency Response Registration for the HD 800 can be done through this link: (http://en-de.sennheiser.com/service-support/services/register-your-product)