RAux InputThe Aux Input allows you to connect to the audio output of an external device such as an MP3 Player or Smartphone so you can enjoy your music through your system. Slide in a DVD/CD, hook your Smartphone or MP3 Player up to the Auxiliary Input, tune into your favorite AM/FM radio station, or plug into the USB and SD ports for more choices.
When I push different sources these is delayed response. Not much power coming from radio to power speakers. Have to replace speakers and add amp to get more power and clarity. Back up camera works good , next time I would spend little more for better quality.
Because for 3000 watts it should have a good good bass I had a 3000 watts amp boss phantom and it was good size and sounded real good this one was good size but no power at all. So it look good but not what expected.