Thanks ACX.. actually I use a sound card, Wolfson Sound card that was a "road test" from Element14. Unfortunately, it was a beta version and it suffer a little bit of programming bugs, and some hw/sw limitations.. so it works fine at 75%. If i use the 3,5 jack on Raspberry i have almost the same sound

I ordered a Hi-Fi berry for try.. When i will receive it i will work on it. And i'm trying to pass the info to an LCD..
By the way, I'm Italian too...

ciao ciao