Evening driller,
6L6's eh! Now your EL84 is always cathode biased (
AFAIK) and the EL34 fixed biased ( so it can be un fixed!) The 6L6 amps seem to have a foot in both camps so do you know which one you want?
Note also that 2 6L6's can still kick A so it will not be quiet!
I have just sent the plans of a simple power soak/ low volume monitoring design to a chap on the forums, open to all, just email. ( might start building 'em!).
Dave.