The Sound Blaster X4 supports up to 7.1 discrete and virtual audio channels, so you won't have to compromise on the way you enjoy your audio. It is also capable of incredible sound performance-acoustics depth and detail-giving a new lease of life to your headphones and speakers. Also, it offers not just one, but three different surround sound delivery options. Feel free to discover the unique characteristics of each surround option, try them out on different types of media content, and maybe-relive that favorite piece of yours in a whole new light. Super X-Fi Headphone Holography More than just surround technology, Super X-Fi is our award-winning audio technology that captures the listening experience of a high-end multi-speaker system in a professional studio to recreates the same expansive experience in headphones. Without missing out on audio cues and immersive ambient effects, you'll be able to hear the details effortlessly from your headphones-especially spoken dialogs in shows-with natural and lifelike soundstage that's deeply immersive and highly realistic, akin to the movie theaters. Once set up, simply toggle Super X-Fi on and off using the SXFI button located on the device itself.