Dear Werner,
If you get a chance, please post some larger pictures of the guts. I'm particularly interested in how to disassemble, and also what the internal mics look like.
Yes, I believe this is a very well built unit. I don't trust Edirol, Microtrack, etc for low-noise build, but I do trust Sony. For design, maybe there are some mistakes, but build-wise it looks really good.
I've ordered one of these, and my goal is to run Countryman B3 with plug-in-power. I'll report back with my results.
Richard