Sennheiser HD280PRO closed-back monitoring headphonesIntroducing the Sennheiser HD280PRO closed back monitoring headphones The HD 280 Pro is Sennheiser's most significant closed, around the ear headphone to be introduced in years. Designed to exceed the demands of the professional environment, the HD 280 Pro boasts extremely robust construction combined with the sound quality, modular design and aggressive noise isolation the necessary in the field. Stay focused on the sound With its high ambient noise