The sound quality is good. Support USB2.0 pure digital audio output, virtual 7.1 channel processing capability. High power, signal-to-noise ratio can reach 90 decibels. The sound is pure and crisp, without any hint of background buzzing or hissing. The stereo separation is good.$ Cross-platform compatibility. A sound card suitable for any operating system will be useful. Compatible with Windows 2000 / WINXP / WIN 2003 / Vista, Linux, Mac OS. No driver installation is required. Just plug it in and it will work.$ Great sound enhancement aid. Very suitable for testing audio problems, or just as a backup sound card, or even as a substitute. And you need this USB sound card, because the headphone jack doesnt work, you need some way to plug the headphone into your computer. A clever way to bypass the damaged headphone jack and damaged sound card.$ Freely switch function keys: microphone mute, earphone mute, volume increase and decrease. Control the volume through the thumb drive. The LED will flash during playback or recording. USB bus power supply, no external power supply is required.$ Easy to use. It is compact, portable, easy to carry, light in weight, and has good audio reception at the output end and microphone input end. Of course a welcome addition to tools or travel bags.