Mofojo, I did compare the Pardo vs stock after a few months of break in. Pardo expands soundstage, improved spl in the room, midrange became much more natural and put nice weight and body on the highs, it just made everything more musical, bigger and smoothed things out but your mileage may vary.
jjss49, I'm going to order the adapters just haven't got around to it. I have a lot of 6sn7's, ken rads, RCA gray glass and so on plus amprex, bugle boy,SQ's, valvo and many other 6922. I very interested where that would take the MHDT, thanks for the suggestion.