I had the same thoughts too, how could the cheaper S400 sound better, but my ears are saying otherwise. We are all unique and we all have different sonic preferences so there will most certainly be guys who would prefer the S500 over the S400. It's just like the FXD IEMs, some guys prefer the FXD70 signature over the higher end FXD80. Althought I love the S400, I'm in no way selling off my S500, they have a place and purpose in my arsenal.
9/16/12 at 2:21am