The HD280 Professional is Sennheiser's most significant closed, circumaural headphone to be introduced in years. Designed to exceed the demands of the professional environment, the HD280Pro boasts extremely robust construction combined with extensive features that meet the requirements of today's most demanding applications. The unique collapsible design combined with swiveling ear cups, offers maximum flexibility in any application.

[Features]

•	Closed, dynamic stereo headphones
•	Accurate, linear sound reproduction for critical monitoring applications
•	Optimum impedance ensures universal compatability
•	Space saving design features collapsible, rotating earcups
•	Up to 32 dB of ambient noise attenuation
•	Neodymium magnets for high maximum SPL
•	Single-sided, coiled cable with 3.5 mm mini jack * with locking 1/4" adapter **
•	Very comfortable, even if used for long periods of time
•	Rugged construction with user-replaceable parts
•	2YR Parts/Labor Manufacturer Warranty Click here for warranty information
* for using most portable players such as Cowon/iAUDIO MP3/PMP ** for using home audio systems

[Headphones Specs]

Transducer Principle Dynamic Frequency Response 8 Hz - 25 kHz Nominal Impedance 64 Ohms Weight Wo Cable 285 grams Characteristic Spl 102 dB, (at 1 kHz/1Vrms) Ear Coupling Circumaural, Closed Distortion < 0.1%

[Connectors]

Connector 3.5 mm mini-stereo with 1/4" adapter