PICTURES GALLERY Grado, Bayer, Sennheiser, Akg, Marantz, Pioneer, Stax,.....

KOSS K6 - 1976 Electrodynamic hifi headphones, Frequency response: 10Hz to 16kHz, Distortion not measurable at 95 dB Out put: 4 or 16Ω, Weight: 340g.

KOSS PRO 5LC - 1976 Electrodynamic hifi headphones, Frequency response: 10Hz to 20kHz, Out put: 4 or 16Ω, Distortion not measurable at 100 dB Maximum power: 100w Weight: 600g.