The standard GT comes with 6 speakers and single slot cd mp3,
The premium pack GT comes with 7 speakers
(where are they ?) and 6 cd mp3!
The 225watt output of the premium pack are
RMS or ''
Musikleistung'' ?
Also
The first modification should take place is changing the head unit with a full entertainment - Navi - TV - DVD 2DIN unit!
Recommendations and brands and shops (which can support sales across Europe!)
are all welcome