|This leads me to something very important that Vertigo-1 pointed out and that is "speed". The reason the 600's sound more pleasant (I actually don't really think that is true but that is the general overall impression that fans of this phone have) is because it is so slow sounding as compared to the 590. In actual fact it is compressing the audio signal.|
Anyway, that's an interesting overall take on the HD600. One of the reasons that I am considering the 600 is I have found it to be more forgiving of lesser quality CDs than my AKG 501.