Sennheiser Closed Back, Pro Studio Headphones The Sennheiser HD280 Pro II Closed Back Headphones feature a closed back, circumaural design that is perfect for both studio and home monitoring applicationsThe Sennheiser HD 280 Pro headphones deliver accurate, linear sound reproduction with crystal-clear highs, powerful bass responses and exceptional ambient noise attenuation. Complete with a soft headband and earpads, the HD 280 Pro II headphones are guaranteed to exceed the demands of professional sound environments. The HD 280 headphones by Sennheiser offer a new standard of performance. Claimed as the most significant closed, around-the-ear headphones to be introduced in recent memory, the HD 280 features a robust construction combined with excellent sound quality that exceeds professional demand. The innovative collapsible design with swiveling ear cups provide flexibility in its application.