Vktech SADES Gaming Headset Retractable Mic Surrounding Sound (SA-903 Black) With the SADES USB headset you get impressive simulated 7.1 surround sound ,Enjoy yourself in the gameplay and experience Sound effect:7.1 simulated sound channels Sensitivity:111dB 3 dB at 1 khz Impedance:32 Ohm +/- 15% Cable length:Approx.2.2m