Here's what I noticed:
"I ran some initial tests with a babynbox, an IPA (set at 4db), and a tinybox (low setting--I think it is 4db as well). From my initial tests, I think I'd have to run line in with the babynbox. On the M10, I ran mic in as per Nick's suggestion. With mic in, I peaked levels quite easily (even at 1). I was screaming like a banshee into my mics and going over each time. I know that isn't the best test, but I figured it would be somewhat close to real life."
To be more clear, when I ran mic in on the A10 my levels peaked even at 1. Of course, I was screaming into my mics. So, maybe that wasn't the best test, but I think it might be safer to run line/audio in. I'm trying to get out tonight, but I may not be able to now. If I do, I'm going to try and use all three toinght (babynox, IPA, and Tinybox)..