Hello,
This is the pictures of my Alize. Masa said that the difference is only in two extra outputs for bi-amping. Regarding FX2 version with anti resonance box I know that it makes from two parts of aluminum and special material between. Also I spoke with Ken about your interest. You can contact with him directly about this.
Concert Fidelity do not have an agent in the US now because US agent, Mr. Chris Sommovigo of STEREO LAB, passed away a few years ago.