Koss P9 Category:   » Audio. video. a photo » Headphones. microphones and accessories for them » Headphones Model: P9 Manufacturer: Koss Headphones type       loose leaves Type of connection       wired Impedance (Ohms)       32 Sensitivity (dB)       102 Harmonics factor (%)       1.00 Frequency Response_2 (Hz)       40 Frequency range_1 (Hz)       20000 Headphone connector       mini jack 3.5 mm Length of wire (m)       1.20 Description:

Headphones Koss P9