Very good IEM, balanced but with high quality bass, medium forward and sharp rounded no bothersome peaks, wide soundstage, not for bashsheads, sound with layers that for the price is highly recommended, its transport case was needed.

Bought headphones as upgrade fd5. I can say that the headphones began to really sound more interesting (while the presentation remained the same), for there are more, the NH has become fatter and more technical.
The set includes 2 nozzles, small, it seemed to me that it is the same in diameter as the FD5 was large. With a small nozzle, the headphones sound suspicious very similar to the fd5. But the big one reveals all the advantages, so he put it on and forgot about the second one.
Improvement compared to FD5, I would say in 10%, no more, so think for yourself whether to update or not. If they let me listen to them before buying, then I would be greedy, probably, to buy them for a full price. But these are still top-end dynamas with signature sound of the FD line.

Petty good sound out of expects price in case nothing to said any bad in this headphone

Delivery to Krasnoyarsk 28 days!! Headphones while listening

Are a revaminized version of the FD5. The FD15 vindicates everything that Fiio's dynamic driver single means: natural and enjoyable sound.