** Don't just win. Dominate.** ** Steel Series 9H with Dolby® Technology** Delivering a tournament-grade audio experience, incredible digital features, & best-in-class comfort, the Steel Series 9H with Dolby® Technology is our best competitive gaming headset yet. Equipped with an advanced USB (Universal Serial Bus) soundcard, the Steel Series 9H provides users with Dolby® technology, Steel Series Engine support & much more. ** Dolby® Technology** The Steel Series 9H when used with the included advanced USB (Universal Serial Bus) soundcard features two Dolby® technologies. Dolby Headphone allows up to 7.1 channels of realistic multi-channel surround sound. Dolby Prologic IIx can convert a simple stereo signal into a rich, surround sound experience. In addition, it can convert a true 5.1 signal in a full 7.1 surround experience allowing for multiple listening modes & a more realistic sound. ** Steel Series Audio** Building on the historic Steel Series audio tradition, a custom-engineered soundscape features a wide dynamic range, which makes it possible for 9H to deliver a balanced & linear tournament-grade advantage. Powerful, detailed audio experience via tournament grade, next generation Steel Series audio drivers that feature a wide dynamic range that means that you can hear all levels of your audio: lows, mids, & highs. Our audio engineers custom-engineered the soundscape for the best possible gaming experience. Advanced components like high grade mylar film to further perfect the sound with added clarity & no distortion. ** Retractable Microphone** The 9H features a retractable microphone system. Pull it out when you need it. Hide it in the left earcup when you don't. **SMART NOISE-CANCELLING MIC** When the Steel Series 9H headset is plugged into its advanced USB (Universal Serial Bus) sound card, it enables a noise cancellation microphone. When you're playing multiplayer, it's more than just skill that will win you achievements, it's communication that will help you dominate. To suppo