Hello all, I've had my new 15'' MBP for a couple of weeks now, and I love it. I'm coming from a 2011, 15'' MBP that had two 3.5mm jacks: one for input, one for output. I would sometimes plug my guitar into the input using a 1/4 to 1/8 adapter and record using Garage Band or Logic Pro. Now, the 2016 models only have one jack, does anyone know if it also works as an input? Thanks!