Just briefly, been traveling all day... Quote: Kind of a long discussion, some of which I've posted before, but I'll get back to you on this when I'm not so tired. Quote: No, it's always a combination of the total hearing mechanism plus the brain. Quote: I'm not all that convinced there is all that much disparity in soundstage between headphones. The major qualities of headphone listening perspective are so overwhelming, and unnatural that the differences in soundstage should be quite minimal within different models of the same type. There is a difference between types though. I'm afraid I don't survey many headphones. Most of them are so bad I just don't bother. The last time I auditioned about a dozen, pretty much hated them all, and some were pretty pricy and famous. I do have a few favorites, and all of those for their neutrality. I really hate colored headphone sound. So I may not be the best one to judge how vastly different response characteristics are perceived as changes in soundstage, other than theoretically, which as I said, I'll have to get back to you with, it's been a 20 hour day so far.