Superior sound quality comes in the new Vita Audio R4 that gives you the option of using several various devices for your music source. The iPod dock on the Vita Audio R4 holds most of the newer generation versions. A USB port allows you to pull tunes in through a flash drive. Front auxiliary ports can hook up the older devices, so you don’t miss out. And if you still have CD’s. slide them in the front slot. 3D Stereo sound and a nice look, get ready to be amazed.