All RP Series headphones deliver this uncolored reproduction and natural clear sound right across the full frequency range with full bass and sparkling highs. But it's the sonic quality at high sound pressure levels which really sets these headphones apart. Whereas lesser headphones struggle at high sound pressure levels, the RP Series have no such problems. The bass is always powerful and distortion-free even at high levels. - Essential when headphone monitoring in noisy environments such as ENG recording, DJ work, and in applications where you need to concentrate totally on your the program material. The Design of the leatherette padded ear cushions enhance the excellent sound isolation and superb deep bass reproduction.