Thanks, Kevin. I thought the last stage was essentially a line stage, but it's weird how they only mention the phono stage in the ad - maybe their documentation is better(???). Anyway, I'm not, and hadn't been prior to this thread, thinking about building this. I was curious about the schematic b/c SRPP (which I've never heard in any form) has me intrigued.
I am very much thinking about building a tube phono stage, and have looked at the Valve Itch project. I'll also look at yours, thanks (at a quick glance yours looks very interesting but I don't understand it...yet). I started a build of Fred Nachbaur's phono stage: http://www.dogstar.dantimax.dk/tubes...cs/phono-m.gif
because I built his SE amp and loved it (it was my first electronics project). But I ran into transformer buzz and other problems and it sits unfinished in a box. Then I heard all the noise about active EQ vs passive. May never get back to it...
I am also not above a PCB project like the TubeCad Tetra or Aikido phono stages, but my first love is DIY point-to-point.