1998 audi a4 avant
 

Hi All

Q I am about to replace the headunit in my Audi it has the standard radio concert. All the power side is fine nut I am wondering about the speaker connections I keep reading about the rear speakers having some kind of AMP on them. Is this true for the standard system.

Also what is s line and k line which is indicated on the radio diagram. And is there anything I need to worry about during the install. My aim is to
Power, Ground, Ignition, Ariel, Speakers

Thanks
Tailor