DESC: These folding headphones are built with maximum durability for DJ and recording use. The high-fidelity stereophone utilizes an anisotropic magnet and 1.4 mil Mylar element for deep bass and treble clarity. The closed leatherette ear cushion provides maximum isolation, and the collapsible design is perfect for protective storage and portability. Features an 18-20,000 Hz frequency response; 100-ohm impedance; and 101dB SPL/1mW sensitivity.