Proprietary large-aperture 53 mm drivers with CCAW bobbin-wound voice coils deliver audiophile-quality acoustic performance with linear frequency response Drivers also feature a top-mounted PCB, which contributes to smoother airflow for precise diaphragm movement Improved 3D wing support system provides an excellent, comfortable fit, aided by the headphones soft, premium-grade earpads Features Double Air Damping System (D. A. D. S) for deep bass reproduction Includes a 3. 0 m (9. 8') tangle-free cable that is cloth-wrapped for lasting durability and a 6. 3 mm (1/4") stereo adapter Connectivity technology: Wired Frequency Response - 5 Hz - 35, 000 Hz and Impedance - 38 ohms