What is it?A collapsible headphone designed for professional monitoring applications. DetailsThe HD 380 Pro is a closed, circumaural design said to provide excellent passive attenuation of ambient noise. The ear pieces employ Sennheiser’s Eargonomic Acoustic Refinement (EAR) technology which channels the audio signal directly into the user’s ears. The low impedance 54 ohm design offers an extended 8Hz – 27kHz frequency response and maximum sound pressure level up to 110dB for accurate sound reproduction in demanding applications. The lightweight, “secure-fit” headphone is said to offer a very comfortable listening experience over extended periods, with the closed circumaural earpieces providing enhanced passive attenuation of ambient noise by up to 32dB. The design features a range of easily-replaceable parts for long service life including a single-sided, coiled cable with a 3.5mm jack connector and a screw-type ¼” adapter. Overall weight is 220g.