With these Koss DJ headphones, you receive high quality sound in a collapsible travel package. The Mix Jockey stereophone features dynamic elements, constructed from 1.4mil Mylar for enhanced rigidity, minimize mechanical distortion and yield a full frequency response.Anisotropic ferrite magnets enable the Mix Jockey to deliver great volume, even with low-voltage portable devices. The oxygen-free copper voice coils improve signal transmission and conduction for cleaner, clearer sound. Closed leatherette ear cushions seal comfortably around the ears, improving bass performance by blocking outside noise. Closed cushions also prevent sound from leaking out of the headphone, perfect for silent areas.With earcups that rotate and fold in, the Mix Jockey collapses into a protective package that is easy to carry and tucks away neatly into small spaces with your computer and gaming consoles. Volume control on the cord makes it easy to adjust the listening level. The padded adjustable headband ensures a comfortable fit for any shape or size head.