Electronics supplier Delphi took time at CES to unveil the Premium Sound system, its first universal speaker dock for subscribers to XM Satellite Radio. The stereo attaches directly to many typical XM receivers, including the company's own SkyFi3, MyFi, and Roady XT as well as third-party hardware from Audiovox and others. An integral XM antenna boosts the signal and helps the Premium Sound System work properly indoors. A headphone jack and an auxiliary input are included for different speakers and audio sources; the speakers can also operate solely on battery power, although the company has yet to reveal an estimated battery life. Delphi's speaker dock will be ready in Spring for $179.