O sa va las comentariul in engleza pe care mi l-a cerut un amic pt ele. Nu il mai traduc, sunt sigur ca veti intelege! Well....right now I have mixed feelings about it. As I said, I already own a fiio fd5 and a fa7 (but this is another story for later). First of all and let me be clear about it, this IEMs worth every penny in their price range. Unfortunately they are not on par with fd5. Sound stage is their forte, better than fd5. The bass is there, again better, and deeper than fd5 but not by far. I would like a more dynamic bass but none of them can deliver the abrupt step to the abyss witch can made you tremble....the mid range I would say is where you can see a clear difference between this IEMs. FD5 are more precise and not only on mids....everywhere. I struggled quite a bit on the equalizer to bring the voice in front with FD15....close but no banana. There is no match for FD5 on this domain. I mentioned FA7 before. This IEMs are let's say ..... specialized. The clarity is top notch. The only problem of them is the lack of bass and dynamic bass and the quite narrow sound stage. In conclusion you get what you pay. The 400$ FA7 brings you unparalleled clarity but they lack the bass that other higher priced IEMs deliver. Most of the time I listen classical and ost with them. The 300$ FD5 IEMs are a really nice, an all rounder....brings the dynamics and the bass FA7 lacks but you won't have the same insane clarity. You can listen everything with them if you are not a picky troll. And last the 150$ IEMs - FD15. They are aspiring to FD5 with a few aces in their sleeves. Totally worth their money. P.S. The cable of FD15 is amazing. FD5's one's although really nice, always made the IEMs to fall from my ears. As I have small ears the prolonged silver cylindrical MMCX connectors are pushing the hooks further away from the start of the ears. And this is one of the reasons I bought the FD15....for the cable.