I just bought Pro Tools 10. I have a Presonus Fire Studio mobile interface. Do I need a Mbox? Sorry for the beginner forum type question, I'll delete this thread after I get an answer. Maybe you can throw in if I don't need it, if it would be worth it to buying a Mbox or is it just the same as the interface I have already?
No, all you need is one audio interface. The box, is an audio interface and your presonus is also an audio interface. You can only use one audio interface, unless you have 2 identical ones that can be daisy chained so the clocking is exactly the same.