Thank you all. New projects (2A3) - actually, I have SE 300B in my mind first. Probably I`ll write about it gradually - output stage, PS, various drivers, etc. - till the finished amp. I have many "breadboard" experiments in plan, expecting new PT from Netherlands, and I hope that I`ll find time/will to post it continuously... I`ll try my best, but don`t expect too much...