I’ve ordered a MZ2 upgraded with the linear power supply and NOS tubes, and I will also be demoing a ZOTL40.
Concurrently, I will be demoing a Pass Labs XA25.
I will mix and match everything, including the PrimaLunas, and see how it all shakes out.
Terry further suggested I consider rolling in NOS Tung-Sol black glass, oval plate 1947 6SN7, Brimar 12AT7 Yellow Label, and/or NOS Gold Brand Sylvania 1957 12AT7 (combinations of which he has used to his satisfaction) on the MZ2 and so I will also bring those to the dance as soon as I can track them down.
@lancelock Many thanks for the suggestion about the Ultralinear (UL) which is more costly. I did speak to Mark about that and at least for the moment we decided to try out the above combinations before anything else. So I will try to establish a baseline sound reference with the above gear and then may bring in the UL for a sound check. If the UL expresses "more" magic then I guess the question for me will be, does that "more" justify the extra expense.
One more note I thought I should share (although I wish there was a way for me to display photos of my listening space because then this explanation would be clearer to anyone reading it). After speaking with Terry, I went downstairs to my set up, and essentially redid the configuration. I moved the speakers perpendicular to where they had been, put towels in front of each of the full length movie posters hanging on the walls (in front and to the sides), hung sheets from the center beam to basically separate the length of the room. So now I have a strange looking but essentially cordoned off listening space. This effort produced an immediate, startling, positive effect that has me questioning my entire effort above.
Nonetheless, I am committed to the journey ahead and look forward to hearing where it takes me.