The closed-back NightOwl Carbon further advances the state of the headphone art, replacing NightHawk’s sound-diffusing grille with an intelligently designed aperiodic damping system for excellent isolation of external noise.
NightOwl Carbon Specifications:
Impedance: 25 ohms
Sensitivity: 99dBSPL / mW
Power Handling: 1.5W
Weight: 346g (12.2 oz.)
Driver: 50mm Dynamic - Biocellulose Diaphragm - 1.2T Split-Gap Motor
Manufacturer's product page: http://personal.audioquest.com/nightowl-carbon