High powered single end 300b recommendations

@markusthenaimnut thanks for such a thoughtful and educating reply.

And to all who have replied, thanks for taking the time to share your thoughts.

Just this morning I was thinking that perhaps it was time to take a step back  and reconsider the basics. I even repositioned my speakers which opened them up a bit more. 

@mikedc 

Did you ever measure how loud your normal listening volume is? If so, what did you find out?

Average 42db

Max 67db