Thank you Ruediger.
Yes, I get what you are telling me, thank you.
And now that I am reading
Get Better Sound by Jim Smith, I got it yesterday, reads like a thriller
.
For only 35$ this book will save me tons of money. I am beginning to think more about my room,
which according to Mr. Smith is almost perfect in size, and think less about spending more to
finally, according to this book, gain very little, if even anything at all, in sound quality.
Lots of people here on ASR already told me to worry less about amps and dacs and
more about speakers and the room and placement of the listener and the speaker,
but I now see that I got into this search because I did not have this book about how to improve the environment.
Now I feel I am on the right track thanks to all of you and Jim Smith,
this is finally like some kine of search for a crystal 
It is very interesting what he has to say for example about the subs and bass :
"
Forget about reproducing the most slam and the tightest bass if you're in this hobby for the music
(this does not endorse boomy bass). For example, there is still some transistorized gear that tends to
"dry up" the bass. This can strip the music of the weight and the body that we hear at
live concerts. Can you imagine asking a bass guitarist for a tighter bass ?" quote Jim Smith, page 37.
This quote makes me think about my friend in Toulouse who sold me the line arrays for 70€.
He liked very much to experiment and at one time he had covered his walls with wooden boxes,
each one with a 15" woofers installed, I think there were about 12 of them, and with tons of wood insulation
between the woofer boxes. I am not sure whether Jim Smith would agree with this, but this is the most
amazing listening experience I have had in my life. I could "see" and "touch" as I closed my eyes,
the musicians in front of me. Everyone tells me that the way he did this (a student of engineering)
makes no sens, but the sound did, giving waves of goose bumps. He was very skilled with computer
and sound corrections, he had a copy of the very expensive simulator from his school.
After having read only a few pages, much of what Jim Smith writes makes very much sens to me,
even if he is not the only one having all the truths and you are so many experienced personalities
here on ASR with lifelong expertise, but he did win several times the best sound price during
exhibition shows after he managed to fine tune the sound according to each room he had at his
disposal.
So finally why spend more when I do not even have begun to set this up yet ?
I will go back to the
3E/A7 at Audiophonics that costs almost half of the Audiophonics Ncore Hypex
and even less than the Nord and spend more time thinking about my room and placements
and perhaps some money on room acoustics since today the room is empty and cold.
Later on I will try open baffles with one Lii Song 15" and a tube amp and CD and compare.
Thank you. 
