onboard realtek audio for ALC883. Just unmuting the line-in2 with the (Visteon) head unit is too loud.
So what serial cable are these guys talking about using with XM? They say they got it from you.
By the way, really love the HD Radio with your cable. Could kick myself for not installing it a long time ago! I'm one of those that always laughed at the concept of "HD Radio". Not laughing (about that) now. Now I just laugh at how they made AM radio sound like FM.