Anyone here know what transmission the 2003 - 2005 AMG CL 55's use i..e the Kompressor models not the earlier N/A?

I see some that mention tiptronic/semi-auto and others that just say auto. Was the semi-auto an option or are they all like semi-auto and some ads just don't mention it?

Have dug around in Google and can't find an answer and even tried on a Mercedes board, but got no replies LOL!

So anyone?