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Headphone HD 300 PRO / HD 300 PROtect 

Acoustic principle 

dynamic, closed

Ear coupling 

circumaural

Frequency response 

6 - 25,000 Hz

Impedance 64 

Power rating 

500 mW

Sensitivity 108 

±

3 dB SPL / 1 V

rms

 / 1 kHz

HD 300 PRO
  Max. SPL w/o ActiveGard    123 dB SPL @ 1 kHz
HD 300 PROtect
   Max. SPL ActiveGard off  123 dB SPL @ 1 kHz
   Max. SPL ActiveGard on  110 dB SPL @ 1 kHz
Ambient noise attenuation  ≤32 dB
Distortion  

<0.1% @ 1 kHz, 94 dB SPL

Contact pressure 

approx. 6.0 N  

Weigth (w/o cable) 

approx. 297 g

Cable length 

approx. 1.55 m 

Temperature 

Operation:  –15 °C .... +55 °C

 

Storage:   –55 °C .... +70 °C

Relative humidity 

≤90%

OR

OR

Transport positions

Headband padding

Ear cushions

Specifications

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