Marco (Jax2), I got the Brick and I am holding onto it. Your description was on the dot - relaxed and smooth, very natural sounding with solid midrange, solid images and deep soundstage, good separation between instruments, every instruments is well defined sonically and spatially. The bass can be a little on the soft side, but I did notice some reaction to tube rolling. I am able to get closer to a solid state type bass and top end extension, but at the sacrifice of some of the positive qualities. I just got some more tubes for tube rolling (Mazda triple mica etc.) to play around soem more. Overall a slightly different sound and presentation from my Audio Aero Prima, but with similar strengths. The Prima seems to ad some more resonance and texture, while the Brick shows more realism and a more natural sound.
Thanks again for all your help and comments :)
Rene