I'm confused, my last Gti 2008 MY had the RCD500 headunit with 10 speakers, My new 2006, 56 plate Gti (not sure what model year) has what I think is the RCD300 but not sure what speakers.
Apart from the pleasant surprise of finding an iPod dock in the armrest (I missed this when I was buying it! Doh.) the stereo sounds so much better than my last Gti!
Why?!
It sounds punchy, bassy and clearer than I remember.

There is a Parrot kit fitted also, I'm wondering if the previous owner maybe had some kind of in-line amp fitted with the parrot.....
