@dill here is an update. I took your advice and upgraded the tubes to 1960's Telefunken smooth plate and picked them up from Brent Jessee, who was extremely helpful.
I also spoke with Mr. Allen at Jolida, soon to be called Black Ice Audio, and he suggested I start at zero and have all the settings turned off, including the voltage gain setting, and hear what I hear.
I am liking what I am hearing so far but I just installed the new vintage tubes this morning, so I want to go a week or so as these new tubes get broken in and see what my ears like before I make an other adjustments.
I also upgraded to a vintage Telefunken tube on my Black Ice Audio Sounder Expander for my Yamaha CACD/DAC player and are loving that upgrade as well.
Brent also recommended going to French 1960's Mazda tubes for the Rogue Sphinx 3 too, which I will switch out next weekend. He has many customers who have made the same upgrade on this unit and have been very happy. That being said it's clear that I just went for it searching for that perfect sound.
Thanks again for your insights.