I haven't owned them nor have I heard them but I can say that Mead Killion is one of the foremost authorities on hearing perception and in-the-ear and in-the-canal hearing aids in the country. Many of the binaural recordings were made based on much of his research. Try talking to his company maybe those of you getting tinny sound are having sealing problems.
etymotic 4P earphones
I just bought these for the ipod....dont have the ipod yet, but used them with portable Cd players. They sound very "tinny" - elevated high frequencies? Not natural at all. Do the Shure ipod earbuds/ phones sound better? Do the etymotics sound different with ipods? Should I try the other versions of these phones?