The K171 MKII professional on-ear, closed studio headphones provide the highest possible noise insulation, perfect for live sound mixing. In order to support familiar hearing habits, the K171 MKII's show a slight smiley face EQ curve with a little bass and treble boost. Their well-defined bass reproduction makes the K171 MKII's the Number One playback headphones for demanding bass players and drummers worldwide. The professional mini XLR connector allows quick replacement of the cable. The package includes a 3m (10ft) straight cable, a 5m (16ft) coiled cable, and leatherette and velvet ear pads.