Sound design based on audio technology and psychology. The sound design has been developed and is based on state-of-the-art audio technology and psychological research findings. Following the usual methods of sound design and amplifying the peak levels of high frequencies may sound realistic at first listen. However, those areas that extend from front to back are overshadowed by the sharp peaks and are hardly audible. The E-series creates an elegant arc across all frequency ranges and ensures that all areas sound authentic in high resolution. With the swivel mechanism, the ear tips can be adjusted in the ear canal to the left, right, or at an angle to find the perfect fit. This prevents distortions at the ear tips' passage that can occur from contact with the ear canal. The sound is transmitted directly to the eardrum and is crystal clear.

High-strength, machined stainless steel housing. Machined from stainless steel and polished to a high gloss: the housing protects the driver and suppresses unwanted vibrations - a crucial factor for the highest sound quality. The design, with its simple shape and high-quality finish, is perfectly suited for classic sound quality and experienced listeners. On the back of the housing, there are openings that expand the playback range of low frequencies. To prevent sound losses, these openings have an internal filter and an external mesh filter made of stainless steel.