My listening impressions... so far...
Ok, I have put this thing through about 10 hours listening. The audience was my wife, my brother in law, and myself.

I have included highlights of the listening session as follows.
I will provide the notes I took as a narrative.
1) Song: "Lovin' Touchin' Squeezin'" by Journey.
Wow, the bass has real authority and grit, and Steve Perry's vocals stand on edge. You can really feel each note of the lower registers of the piano. I love it. The highs leave nothing to be desired. Excellent high hat and you can actually tell that is an inverted symbal. Wow.
2) Song: "Tryin' to throw your arms around the world" by U2.
This is admitedly not the greatest recording, but it has some great left right stereo details which I use to judge channel seperation. I like the detail of the quiet guitar details on the right channel, and the ringing metalicness of the keyboard parts is distinct on the left. As close to a perfect 10 on this song as I have ever heard. Bono's vocals are badly compressed, but thats not the amps fault, still you can easily hear the quiet lyrics in the part right after the last bridge. Excellent!
3) Song "Money for Nothing" by Dire Straights.
This is an all time classic for testing amps(And a little worn around the edges).

I use it all the time. The opening drums to the first guitar riff simply shine. That guitar riff with the bass counterpoint leading into the verse is sweet! And the the seperation and soundstage is clear and distinct.
4) Song "Low Self Opinion" by Rollins Band.
One of my favorite grunge songs.

You have to dig Rollins vocals and they come right to the front. The recording sounds very "live" and this comes through with excellent authenticity. That bass riff just throws it down. Awesome, all this with no subwoofer!

Favorite Line "if you could see the you that I see when I see you you'd see yourself much differently, believe me".

Great lyric.
5) Song "Love Me Like a Man" Dianna Krall.
Wow, this is a great female vocalist, this recording is SACD and I love it. Dig the piano, its like it was a few feet away, and the silky soft way she delivers each note. You can hear each breath she takes, and the nuance of the scolding tone of voice she takes at times. I find myself playing it twice. Excellent.
6) "Through Her Eyes" Dream Theater.
I love this group, So I am particularly picky about how it is reproduced. James Labrie's vocals get the attention they deserve, you can here the emotion in this great ballad, the quiver in his voice as he sings, distinct and correct. John Petrucci's genius on the guitar is evident throughout and it is as if you were on in orchestra seats on the Gaylord Entertainment center as the performed this song. Brings a tear to my eye. Excellent.
7) "Symphony No. 2" Mourton Gould, performed by the Albany Symphony Orchestra, David Allen Miller conducting.
This is a great american composer, and one of the modern era's early masters. Listening to his symphony is somewhat like viewing a picasso, the genious is evident, bu the message requires thought. The timpani, and the xylophone add texture to a complex, and never boring ride through the thought process of a early modern impressionist composer. The presentaion is spot on, with just the right amount of in your face "up frontness". You can feel the smack of the kettle drum. A+.
Thats all I have time for for now. I can't wait to listen to more.
Thanks for this fabulous design Mauro. You have made this man very happy.
Cheers!
Russ