from the film world, avid is the leader in editing systems, m-audio is a division of avid so; based on there reputation, i would assume that they are good quality components. I would leave the specs up to you since you are more knowledgable in that realm of the hobby.
i would just go balanced out 1/4" (i believe that's what they use) to balanced xlr (my amp has balanced inputs). if you dont have balanced inputs on your amp i *think* you can make a cable where you ground pin 2 (DONT QUOTE ME ON THIS, I'M JUST THINKING BACK TO MY COLLEGE DAYS) and you'll have unbalanced level. There could be something wrong with this technique but i cant think of it at the moment.
I'm emailing m-audio now and hopefully will get some answers.