Nippons stereo headphones are pleasing to the ears as they are to the head. The nippon hp150v stereo headphones are a great all-purpose elctrodynamic headphone. Features include: dual volume controls, switchable from stereo to mono , adjustable headband , comfortable leatherette padded ear cushions , 6 coiled cord with 1/4 plug , good, full-range sound , frequency response: 20-18,000hz , impedance: 32ohms.