- Nov 22, 2003
I know that it's been said before that there is no performance improvement with IEMs due to burn-in, but I just wanted to check and see if that's still the accepted wisdom. I've had my new Shure E4s for about a month, and I have to say that I was very lukewarm to them the first two weeks or so I had them -- preferring even my old E3s. But I find myself really liking their sound now, and it really does seem like a very different sound than I was getting out of them initially. Is this really just psychological or acoustic adjustment on the part of my ears and brain?