OK, my 1814 M-powered Pro Tools box says that I can plug my amp into the line input, but did they really mean that ? I have a Rivera M60 head w/ line out, and a Mesa F30 with line out, and my my 1814 claims a line input. But, like, its going to melt in a burst of sparks if it gets line from a cranked 60 W amp isn't it ? Anybody know the answer to this one ? Thanks !!