Audeze CRBN electrostatic headphone - circumaural, open, 120 x 90 mm ultra-thin custom E42 carbon nano-tube membranes, frequency response 20Hz - 40000 Hz, max.SPL> 120dB, THD <0.1% @ 90dB, leather ear pads, carbon fiber headband, magnesium, stainless steel and polymer acetate housing, 2,5 m 5-pin OCC copper material premium electrostatic cable, aluminum flight case included, weight 300 g