WITH PHYSICAL DEFECT 
 
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.
 
Closed-Back Design
 
Hidden beneath the central circular portion of NightOwl’s earcups, a vent runs along the perimeter of each dome and exits through a hidden airflow-resistive port. Thus, unlike other headphones that use a sealed enclosure, NightOwl is designed to effectively relieve the buildup of pressure, allowing the drivers to breathe freely, ensuring that any impulses quickly return to an innocuous resting state—with no ringing, oscillation, or resonance.