Ferrari Sound system

I saw my first Ferrari F430 in this country earlier. The guy was driving through campus with the top down with Presidential by youngbloodz blasting through what seemed like some beefy subs. I tried to look in as I walked along on the side walk and I couldn't really see any space for woofers or an amp so was just wondering is the stock system actually really good or has this guy somehow managed to pack in some powerful 6 x 9's or whatever they are?

oh and it was awesome, guy was getting crazy looks