What Sennheiser say....
Due to their low weight and the option of one-ear listening, the HD 25-II headphones are indispensable for mobile monitoring. The closed-back HD 25-IIs are purpose-designed, professional monitoring headphones offering high attenuation of background noise.
Capable of handling very high sound pressure levels and of extremely robust construction, these headphones perform exceptionally well in loud environments, e.g. ENG, sound reinforcement, studio monitoring and audio equipment testing. Ideal monitoring headphones for cameramen and DJs, these are a pair of true sound professionalsí working headphones.
Very lightweight and comfortable, even if used for long periods
High maximum sound pressure level
70 ohm nominal impedance for universal compatibility
Tough, detachable steel cable
Neodymium ferrous magnet systems and lightweight aluminium/copper voice
Wearing style: Headband
Frequency response (headphones): 16 - 22000 Hz
THD, total harmonic distortion: < 0,3 %
Contact pressure: ~ 2,5 N
Ear coupling: supraaural
Jack plug: 3,5/6,3 mm stereo
Cable length: 1,5 m
Transducer principle: dynamic, closed
Weight: Without cable: ~ 140 g
Nominal impedance: 70 O
Load rating: 200 mW
Max. Sound pressure level (active): 120 dB
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next working day - UK only. Heavier items,
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