There must be a reason other than sound isolation why Hifi & speaker companies like B&W, B&O, PSB, Kef. Musical Fidelity, Macintosh, Pro-Ject, Furutech, Martin Logan, Oppo, Onkyo, Final Audio & Focal all make only closed phones?
EDIT plus the the current and past flagships of companies such as Sony, Fostex, Audio Technica and Denon are all closed when they don't necessarily have to be. Just a thought.
Edited by godbluff - 8/14/15 at 12:36pm