The UR29 stereophone delivers bass-enhanced high quality sound in a sturdy package suitable for DJs and listeners on the go. Dynamic elements, constructed from 1.4 mil mylar for enhanced rigidity, minimize mechanical distortion and yield a full frequency response. Anisotropic ferrite magnets enable the UR29 to deliver great volume, even with low-voltage portable devices. 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 and blocking outside noise. Closed cushions also prevent sound from leaking out of the headphone - perfect for the dorm room.