The HyperX Cloud Alpha S Blackout keeps the best parts of the original, groundbreaking Cloud Alpha, but with additional enhancements and features. Cloud Alpha S features custom-tuned HyperX virtual 7.1 surround sound* delivered through its advanced USB audio control box. Bass adjustment sliders have been added to the ear cups so you can fine-tune the bass level of your audio. You can adjust audio volume, mic volume, mute the mic, activate 7.1* and now even adjust the game audio/chat balance on the audio control box. The Cloud Alpha S still features the revolutionary dual-chamber driver system which reduces distortion and provides clearer sound, as well as the signature HyperX comfort afforded by the memory foam ear cushions and extra breathable leatherette. * Virtual 7.1 surround sound effect output as a 2 channel stereo signal to be used with stereo headphones.