Guys, thank you all for the warm welcome and encouraging words. I did not have a chance to work with Dyna xfmrs, but (during development) I tried some super cheap ones from Antique Electronic Supply (small and cheap P-T31 worked surprisingly well), small ones from Triode Electronics (not that great, but useful), then Hammonds, from 125CSE to 1627 (all good but the $92 transformer was just to test the limits, costs more than all the electronics). Finally I went through few iterations with Trafomatic till we got it right. As you all know, there are always tradeoffs, choosing the right ones is a problem. Dimensioned drawing for the PCB is in the user's manual and also on the website under "Documentation", then item #2. As for the chassis, I have something that I used for few custom projects, if you follow the first link in my original post, there are some pics posted. Thanks again, Boris