Radioshark to Car Antenna - Page 2 - MP3Car.comHead Units double left and right channels to front and back speakers. But you get fade control. Most car amps will let you control fade though by the levels for each speaker. Head units with DVD/Dolby or Surround capabilities can output true surround. I've got surround working perfectly on my Windows install . I'll keep you posted on teh Radioshark, but it might be a week or so before I get to st
