Sennheiser HD380PRO Professional Monitoring Over-the-Ear Headphones Black, NOB ———— New Opened Box Condition. ————- Collapsible high-end headphone ideal for professional monitoring use. The HD 380 Pro offers a closed circumaural design which provides excellent passive attenuation of ambient noise. It also utilize Sennheisers Eargonomic Acoustic Refinement (E.A.R) design which channels the audio signal directly into the users ears. Features: Host Interface Mini-phone Product Type Headphone Manufacturer Part Number HD380PRO Manufacturer Sennh