After 3-5 days with N4 universals I must say the mids and higs are close to perfection, the best I ever heard from an IEM. There is way more layers, clarity and transparence than on Rockit R50 and Vsonic GR01, quite as expected. However, somehow unexpectedly, they also beat my full headphones (HE-400) in these and a number of ways. N4 are more transparent and neutral, somehow never harsh and sibilant as HE-400 often are. Soundstage and bass are still better on HE-400, but in every other way I prefer the N4. What a great headphones.
I may post more impressions and comparisons next week. Tomorrow I should receive DN-1000 -- a hybrid of two armatures and one dynamic driver. Wonder how these stack up against N4.
N4 are sounding more and more like the IEM for me... How is the bass on them ? I know its not the biggest around but how is it's accuracy and pace ?
Also anyone with the Sony NW ZX1 trying it with N4s or N6s ?