The HD 280 Professional are closed-back, circumaural headphones designed for professional monitoring applications. Although suitable for a very wide range of applications, the exceptional 32 dB attenuation of external noise makes the HD 280 Professional particularly useful for use in a high-noise environment. 

Features:
Accurate, linear reproduction for critical monitoring applications
Replaceable parts for long life
Neodymium magnets for optimum sensitivity and wide dynamic range
Very good attenuation of background noise
Lightweight design
Comfortable fit due to soft, circumaural ear pads
Easily replaceable, single-sided coiled cable
Space-saving design with collapsible, rotating earpieces
Supplied complete with screw-type adaptor to 1/4" 

Technical Data:
Frequency response ................8 – 25,000 Hz (–10 dB / 1 kHz)
Transducer principle.................dynamic, closed
Nominal impedance .................64
Sound pressure level...............102 dB (as per IEC 268-7)
Attenuation .............................. max. 32 dB
Load rating............................... 0.5 W
THD............................................< 0.1 %
Ear coupling ............................circumaural
Contact pressure..................... approx. 4 N
Weight (w/o cable)................... approx. 220 g
Connector ................................5 mm Ø stereo mini jack plug with adaptor to 1/4” (6.3 mm) stereo jack plug
Connection cable.....................Single-sided coiled cable, min. 1 m / max. 3 m 

Includes:
1 pair of HD 280 PRO headphones
1 screw-type adaptor to 1/4"