What is THX certification? It means that professional audio specialists at THX, the world-renowned company founded by George Lucas, have certified the performance, accuracy, and quality of the Z-2200 speakers. And once you hook them up to your PC or music player, you'll hear the difference immediately: Rich, clear highs and mid-range. Booming, distortion-free bass. All in a sophisticated design that will look great on any desktop or living room. Plus you'll get the full-featured SoundTouch wired remote control for convenient control over the listening experience in a compact, space-saving design.