B-Stock, Sennheiser HD 660S2 headphone, wired, over ear, open back, dynamic. frequency range: 8 Hz - 41,5 kHz. impedance: 300 Ohms. sound pressure level: 104 dB (1V). driver size: 38mm. total harmonc distortion: <0,04% (1 kHz, 100 dB). velour ear...
