Koss UR21

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Data[edit]

General

  • Manufacturer: Koss
  • Model: UR21
  • Years of manufacture:
  • Weight:
  • Made in: USA
  • Original price (MSRP): approx. 20 US-$ (16 €)


Technical Data

  • Principle: Dynamic, closed
  • Coupling to the ear: Ear wrapping
  • Impedance: 32 Ohm
  • Rated power handling:
  • Frequency response: 40 - 20,000 Hz
  • Sound pressure level: 90 dB
  • Distortion factor: < 0.4%
  • Plug: jack 3.5 mm
  • Cable: 1.2 m


Special Features

  • list here


Remarks[edit]

Other models of the same series:

Pictures[edit]

Reports[edit]

Links[edit]

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