Portable Sound Blaster X-Fi sound card in compact USB stick format * THX TruStudio Pro Surround converts your movies and games into virtual 3D surround sound over headphones * THX TruStudio Pro Crystalizer enhances all audio especially MP3, DIVX and online movies and game audio for extra clarity and definition * Gaming support includes EAX 5.0 and OpenAL plus Creative ALchemy software to restore EAX surround to games running under Windows Vista/ Windows 7 * Creative Silencer removes ambient noise for ultimate clarity during voice chat