MODEL- HD-25SP            VENDOR- SENNHEISER ELECTRONIC
     
FEATURES- HD-25SP Stereo Headphones- Black
       Reproduction of high sound pressure levels across the frequency 
        range allows for critical and enjoyable listening in a noisy 
        environment. The sturdy lightweight, closed dynamic HD 25SP offers 
        up to 16 dB of passive noise attenuation.  
* Sturdy, modular design for durability  
* Lightweight and comfortable  
* High maximum sound pressure level  
* Neodymium ferrous magnet systems and lightweight aluminum/copper voice 
  coils for high transient response.
     
  -- SPECIFICATIONs ----------------------------------
CONNECTOR    - 1/8" stereo jack with 1/4" adapter
HEADPHONES   - Transducer Principle: Dynamic, Closed back
               Frequency Response  : 30 ~ 16,000 Hz 
               Nominal Impedance   : 85 Ohms 
               Attenuation         : 16 dB (passive)
               Weight w/o Cable    : approx. 5 ounces
               Ear Coupling        : Supraural 
               Headband Pressure   : 3 N 
               Sensitivity         : 100 dB 
               Distortion          : < 0.5% 
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