Connect the ultra-compact and cool running eAR Ciaccona-3G directly to the FireWire port of a MAC iBook, or a NoteBook with Windows XP, or eAR RT-OS (Linux based) and connect a pair of loudspeakers. That is all you need to experience truly high-end stereo sound from your MAC or your PC.Plug-and-play to computers with OS X and eAR RT-OS.