Luxman is actually a Focal distributor in Japan and they also use Focal among others to voice their gear. I’ve been very happy with the combination. Did have to find the right interconnects to tame the top end a bit as the Focal beryllium tweeter has a quite a bit of energy. Cardas Reflection was the right IC for the job. As for the P20, I can’t say it was night and day.  I bought it for my prior system and the music gained a more solid foundation with less distortion creeping in to the system. 

The power plant also has been of interest to me and I'm wondering what did you notice after you installed it? Is it a big improvement versus what comes out of your wall directly?  I use power conditioner and that seems fine for me at least.