Koss UR21
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: