So I am new to all this audiophile gear, no idea what most of the tech specs mean so I am having trouble finding appropriate gear. I am looking for a portable DAP with a good built in headphone amp. I have a set of Bowers and Wilkins P3's and may purchase a set of P5's in the near future (or something equivalent, B&W is def expensive). I have had these P3's for a little over a year and was always bummed by how mundane the sound quality was, not much of an improvement over my in ear workout headphones. But recently I got a chance to try my P3's while connected to a friends DAC off his macbook pro and I was blown away, the P3's are capable of so much more than what an iphone 5c can provide (my phone). After hearing that, I have this itch I need to scratch... I want to listen to all my favorite music like that! So any suggestions on portable DAPs with a solid performing headphone amp built in? I want something that would give these B&W P3's justice and leave some room to step up the headphones later. I also have a set of Mackie powered studio monitors so a line out function would be nice. I was looking at the FiiO X3 and X5 (2nd gen) but those are kinda big, I am looking for something more portable. I like the Sony NWZ-A17 size, but it is out of my price range... I would like to spend < $200 Thoughts, suggestions?