I just got these, these are my first pair of IEM, I'm kind of an IEM noob, but I own several headphones like the Senn HD650, Senn HD 25-ii, Beyerdynamic DT 880 pro 600ohm, and Audio technica M40X... I also owned the Senn HD600, and a mod of a fostex T50RP (Talos)
This IEM is very very well...