Take your gaming audio to the next level. The GSX 300 external sound card is the obvious upgrade for gamers who are passionate about audio quality. The GSX 300 inserts in-line between the headset and PC, delivering high-resolution stereo audio and customizable 7.1 surround sound with the PC gaming suite. As most gamers know, high-quality game audio that delivers realism and positional accuracy helps with in-game reactions and performance. Take your game audio, and therefore your game performance, to the next level with the GSX 300 external sound card. High-Resolution Audio. 7.1 surround sound via PC gaming suite. Intuitive design. Sync with Windows 10 sound.