I'm also running the Alpine CDA 9857 which, with the optional iPod
adapter, I connected right up.  I also run Sirius satellite radio.
This combo is hard to beat.  I must admit, the Wal-fart version that
accepts SD cards and USB drives intrigues me.  However, the sound
from the Alpine through my 640 watt amp, four Polk Audio speakers and
my 10 inch JL Audio sub (with a 300 watt mono amp) just sounds
great.  Hmmm, now who do I listen to ... Willie, Snoop, or Squarepusher?

Warren L.
88 Westy "Billy Bones"