Yes, welcome to the club, lololololo & smithyone1l.
smithyone1l, I hear the Pros rather like Barra and I agree with almost everything he said about them.
Now that I've spent enough weeks with them, I can safely thank everybody here for the help, and say how much I am happy with my choice.
Before going further, I have to confess a few things about me that might help to understand my point of view.
I am basshead, but it is also about the quality (especially the sub-bass).
I hate brighness, harshness and although I am more tolerant with sibilance than before, I am not a big fan of it.
I do not like treble enhancements, and I I feel littérally assaulted by peaky treble.
Like Barra, I listen to music at low volume.
I sometimes had to cling to my chair because I had the impression to be shaken by the bass .
And I am barely exagerating when I say that.
The bass is there when needed, with the "ooooomph", the air, the sub-bass, the impact, but the control is dictatorial.
The only word that comes to my mind is "awesome": if you like to feel the bass, the Pros allow you to feel it.
It can be subtile, or completely absent with acoustic music, or heavy with rap music. Remarkable.
About the brightness: I won't say there isn't any, but you'll hear it mostly with artists who like to add brightness in their songs (David Guetta, Sweedish House Mafia...), but even then I feel the need to increase the volume.
The harshness I heard is gone now, and my worst tracks are not offensive.
The Pros won't hide sibilance, but as Averoge_Joe said, it is not an issue at all, at least to my ears.
Imho,the sound is a bit too clear to be qualified as completely natural but it is not far and a dap with an organic sound will add more body to your music without loosing the clearness.
I also hear the enhancement in the treble region, but (and I cannot believe I am saying this) I am a big fan here: again like Average_Joe & Barra I do not find it agressive, and with very capable singers, you might want to increase the volume.
The soundstage is outstanding: I do not feel like I am listening to music, but rather like I am watching the performance, or like I am in the middle of the music with details every where (even sometimes behind you !!!). Incredible.
I do not manage to estimate the scale of the soundstage as I do not have enough experience in this hobby, but the impression of space is always present in every song.
I remember Ardgedee said that at low volume, the Pros are rather neutral and I completely agree with him: you will hardly notice (even not at all) the brighness or the enhancement in the treble region.
To conclude, I shall say that I am relieved, not only because I made the good choice, but especially because I am completely satisfied.
For the first time I feel I am done with my headphone quest.
The lack of warmness, is not an issue: this pair just immerses you in the music and you will often feel the need to increase the volume to flood you there.
It is a little like when you are in a swimming pool: sometimes you just want to dive and and stay in apnea.
The NT6-Pro is the best compromise between a critical/ analytical listening, and a contemplative listening that allows you to feel the music and emotion.
Those are kind of comments I like! The way you describe them, they sound great. Thanks for that Pondu.
I only have a Galacy Note 2, which sounds pretty good, comparable IMO to my last Cowon player the S9, which was significantly better than any other MP3 player I'd heard before. I've also had a Sony MP3- which has great impact, but not as refined as the Cowon.
I also have a USB DAC with a headphone output:
Which is apparently a pretty decent headphone amplifier- it's a DAC comparable to 1000 dollar units which I demoed before buying it, including Naim and Benchmark. It sounds much larger, more detailed and with better bass extension and control than my Note 2. It's better in every area actually. So I can give some impression with this vs the Note 2 when I get my Nt6-pros.