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      08-29-2009, 04:30 AM   #111
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Originally Posted by gIzzE View Post
Hmm, that's not quite correct, it may be in some instances but when hooked up USB the head unit reads the files and decodes them, doing a digital to analogue conversion.

If you use the aux input you are relying on the quality of the MP3 player, which in the case of the ipod is not very good, even from the line level.

That is why Alpine made such a big thing about hooking up usb as did Wadia with their dock.

I think the USB connector is far better than the aux, you need decent high bitrate files and anything less than L7 system probably won't show the differences though, but the decoding of the files seems pretty good with the factory usb option.