Audio in and Audio out - MacBook Pro
I'm interested in purchasing a MacBook Pro mainly for music production (I'm kinda new to the whole DJing scene) and I noticed a small difference between the 13' and 15' models. The 15' model includes a separate Audio in and Audio out while the 13' has only one Audio in/out exit. Does anyone knows what's the difference between the two? What can I do with a separate Audio in and Audio out exits like in the 15' model? Is it worth paying the extra $700?
Thanks in advance!
Asus G73JH-B1, iOS 4