I've seen several posts about Jettas, but I'm not sure any have provided me with the info I needed -- so I'll just ask it here.

I have a 2000 Jetta with the standard 8-speaker sound system and standard head unit. I have room for another DIN unit in my dash, while keeping the old head unit. My question is: Can I just run the empeg through the original head unit without having to buy an amp or any external hardware? Does my Jetta have a standard line-in? (I've heard that it has a special CD interface that isn't simply a standard line-in.)

Thanks for the help!

Andy