Sennheiser HD25-1 II Headphones

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The closed-back HD 25-1 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 high-noise environments, e.g. ENG, sound reinforcement, studio monitoring and audio equipment testing. The capsule is rotatable for one-ear listening. Ideal monitoring headphones for cameramen and DJs.



  • Very lightweight and comfortable, even if used for long periods
  • High maximum sound pressure level
  • 65 .nominal impedance for universal compatibility
  • Tough, detachable steel cable
  • Neodymium ferrous magnet systems and lightweight aluminium/copper voice

Technical Details


  • Brand : Sennheiser
  • Model : HD 25-1
  • Ear coupling : Supraaural
  • Transducer principle : dynamic, closed
  • Nominal impedance : 70 Ω
  • Frequency response (headphones) : 16 - 22000 Hz
  • Max. Sound pressure level (aktiv) : 120 dB
  • Load rating : 200 mW
  • THD, total harmonic distortion : < 0,3 %
  • Contact pressure : ca. 2.5 N
  • Jack plug : 3,5/6,3 mm stereo
  • Cable length : 1,5 m
  • Weight w/o cable : ca. 140 g



Brand  Sennheiser
Model  HD25-1
General SPEC
Frequency Response  16 - 22000 Hz
THD  < 0,3 %
Input Impedance  70 Ω
Connector  3.5 & 6.3 mm stereo
Ear Coupling  Over the head
Type  Headphones
Cord Length  1.5 m
Sensitivity  120dB


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