Using Klipsch's Balanced Dynamic (KBD) driver technology, the fully balanced drivers move like a piston and decrease distortion bringing the most authentic bass ever heard in an over-Ear headphone. With deep, comfortable Ear cushions and high-end 40mm KBD dynamic drivers, Reference Over-Ear is the new benchmark for over-Ear sound. Features: - Premium Acoustic Technology and Materials - Unique 40mm Klipsch Balanced Dynamic Drivers - Removable Flat Cable - 3-Button Remote + Mic for iOS - Removable Ear Cushions - Portable, Folding Design - Hard Shell Zip Carrying Case