For high quality sound, the Sennheiser HD500A headphone is here for you. With a frequency response of 14-21,000 Hz, this Sennheiser headphone reproduces sound in a way so that you do not miss a single nuance at both high and low frequency range limits. The 32 ohm impedance in this Sennheiser headset offers efficient performance. With less than 0.2% of harmonic distortion, the Sennheiser HD500A headphone delivers crisp and clear sound. The Supra-aural, semi-open air ear coupling in this Sennheiser headphone have pads that sit on top of the ears, rather than around them. The ear-cushions of this Sennheiser headset are made of vinyl that is extremely durable.