I hope that`s possible - various taps and 100mA capacity can be good for mono 2A3 SE amp with B+ of about 305V/70-80mA (LCLC probably). I started working on the prototype, but I`m slow and don`t have too much time (work...), but one of these years I`ll post the full "story" with pictures in color, step-by-step instructions, etc... Stay tuned