Thanks Morten! Forgot to mention the most important piece - the sound...
I'm using it as a pre for my electrostats (MartinLogans) and the v25 LDR + xstats is like pb&j. Lots and lots of detail, absolutely silent- its like a direct wire through to the source. Hard to put it into words, but these boards are not leaving my setup. Very glad I took the plunge on LDR, nothing can touch it in my opinion (have built TVC prior as well).
Yeah, I stacked the boards- made sure I had a cm or so above the bottom board LDRs. It worked well because power and signal runs can stay segmented, and each board is essentially equidistant from the power and signal source. I'm all for keeping signal cable short as possible and it really works well stacking them.
Going overkill on the power circuit really paid off. Autocal is ridiculously fast. Already making another setup with these guys (as you know).