The AKG K171 MKII Closed-Back Studio Headphones are professional on-ear, closed studio headphones that 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.