First, go to headfi.org for the best information on headphone systems. Second, you need a preamp, source device or something that has a headphone jack.
As to active noise canceling headphones, if you are seeking maximum performance you want to avoid these. The concept really doesn't work as one would think - they do a decent job of addressing airplane noise and such, but not variable real-world noises. Besides, even the active noise canceling phones don't really do any better of a job vs. in ear (preferably custom fit) or closed cans.
I have a few pair of phones (4), 2 in-ear and two on-ear. Of the two on-ear one is a closed design and the other an open back design.
If you are planning on taking you listening with you, you may want to consider some of the many excellent portable headphone amps. If you travel for business these are really nice to have.
As to active noise canceling headphones, if you are seeking maximum performance you want to avoid these. The concept really doesn't work as one would think - they do a decent job of addressing airplane noise and such, but not variable real-world noises. Besides, even the active noise canceling phones don't really do any better of a job vs. in ear (preferably custom fit) or closed cans.
I have a few pair of phones (4), 2 in-ear and two on-ear. Of the two on-ear one is a closed design and the other an open back design.
If you are planning on taking you listening with you, you may want to consider some of the many excellent portable headphone amps. If you travel for business these are really nice to have.