The DragonFly Black looks like a flash drive. You plug your headphones into its one port, and that's it.
There's something to be said about simple, subtle audio gear, and hopefully other companies will begin to offer similar products. You can even use this DAC with your iPhone or Android phone with the right adapters, which is great news for audiophiles who travel often.
As it stands now, I've spent almost a year using AudioQuest's DragonFly Black and I don't plan on stopping. Anyone who enjoys music and wants to make the most out of listening to it at their desk should seriously consider trying one for themselves.