I read through a lot of the above comments and my situation was MUCH different on many points.
I brought with me my full size CD player, an amp, a few headphones, full size computer, large LCD monitor, and computers speakers (for my tech stuff). I had room for all of it and none of it has ever been touched by anyone.
I think the idea that you only have space for a laptop, teeny DAC, and headphones is ridiculous! I am in a double-sized room with two other people (a forced triple) and I have more than enough room for all of my stuff.
As far as theft, it has happened barely at all here. The stuff that gets stolen: iPods (!!!), laptops, and X-Boxs. Lock your door, have some common sense, and it will not happen most likely.
You have made it to Princeton, that means you are pretty good at studying or have parents with connections
. I'm gonna assume the first one. Bring all the toys you think you need to be at home. It sounds like audio is important to you, don't skimp on it! If it becomes too big of a distraction, you'll be smart enough to know that!
Now, for roommates. When you choose roommates, they will probably give you a form that asks about your interests. Make sure you talk about music and they'll be more inclined to give you roommates that like it. Even if they don't like music, I highly doubt they will be offended by you having your own stuff. I was worried about the same thing when I first came to school. I worried that I had too much audio stuff, too many clothes, etc. etc. Turns out I was completely wrong. Just keep your things in your own space and you won't ever have a problem!
Anyhow, if you want to go with a DAC, I think that will probably be fine too. But from someone who went through the same stuff a year ago, just know that that isn't your only (or maybe even best) option. Well, have a good time at Princeton, they always said we (Occidental) were the Princeton of the west. Oh what a joke
but have a great year.