One of my all time best vintage headphones
The Sansui SS 50 from the middle 70'
full specification:
Sansui Stereo Headphone SS-50; Two way, 4 speaker system, closed system, moving coil type, 8 ohms, frequency response 20 to 20.000 Hz, 500 mW max. input power, cone speaker diameter is 75 mm, tweeter dome type diameter is 33 mm, 800 g, 6.3 mm stereo jack
