The open, dynamic HD 518 high-end headphones are equipped with E.A.R. technology developed by Sennheiser: acoustic baffles inclined at a slight angle guide the audio signal directly to the ears. In this way, the excellent sound is optimally channelled. The carrying properties are outstanding as the headphones are individually adjustable for optimum fit on the head. Breathable ear pads, a single-sided cord, and low weight represent further positive features.