I did a review here:
http://player.ru/showthread.php?t=233983&page=4
Translation:
Today all evening drove them on his M11 through the balanced output up and down, listened to all their test tracks and even more, in key groups of genres (conditionally):
Heavier (U. D. O., Rammstein, Metallica, Sabaton, Iron Maiden, Testament, etc.)
Take it easy (Dire Straits, Pink Floyd, R. Waters, C. Rea, Smokie, C. C. Revival, etc.)
Instrumental & vocals (C. Spheeris, A. Taylor, L. Cohen, etc.)
Electronica (Alphaville, Depeche mode, Camouflage, A-ha, Fancy, Space, Duran Duran, etc.).
Now in order.
In the review I will start from my FiiO FH5 and compare it in detail with them, as with the previous top model in the line and as a model that I know and love.
On tinnitus 7-Ki sit also conveniently, as and 5-Ki, but enter slightly deeper and soundproofing slightly better.
SOUND.
BASS.At first after FH5 it really seems that fh7 lacks bass, but these are the first minutes. But when I began to listen carefully to familiar tracks, and then listened to the sound, then listened to the music itself, abstracting from the frequencies and nuances of the sound, and came to an understanding, or rather a feeling that the bass is enough! It is not just enough, but absolutely as much as necessary! And initially this a sense of arises not because, that in 7-ke little basses, but because, that in 5-ke their very many, I would said with surplus.
But in 7-Kakh bass not only quantitatively a bit the other, but and qualitatively and in different genres manifests itself differently, but common is his a greater density and resilience.
MIDDLE. It is more detailed and airy than in the FH5, although not on the head, but it can be heard "with the naked ear".
TOPS. They are a little clearer than in 5-Kah, higher resolution and overall sound airy. I don't know what layering is, but it seems there are some here 
IMHO it is this air the middle and clear at the top and give FH7 such "andromedary" sound.
As expected, FH7 metal is played more technically than FH5, the sound is more detailed, there is less or almost no porridge even in difficult places.
And listening to" Hello " from Pink Floyd caught myself thinking that I really do not want to listen to these frequencies, layering and other audiophile stuff, but I just want to listen to music and enjoy.
Summary.
1.FH7-neutral balanced ears, in which all as need to and all frequencies on place, detailed, natural, clear, air, such "affordable Andromeda."
2.This is a serious ears that have an adult sound, very close to the hospital, and listening to them with Caiyn N6ii it seems that you listen to a full-fledged hospital.
3.Headphones are worth their money at 100% and are recommended for purchase, but I think that first of all will suit those who love honest sound.
4.To buy a smartphone makes no sense, tried, their potential is not revealed and half.
PS. Thanks for your attention