Thanks, Paul, Grainger and others!

[Tom-Huffman]

It is finally done and burned in...sounds great.
The Stereomour was upgraded with Triad chokes and all AuriCaps + JJ 2A3s and Psvane 12AT7.
Speakers are Lowther PM5As in plexiglass open baffles and Great Plains 416s in the enclosure below the window tuned to 25Hz.  Electronics: First Watt B1 preamp, First Watt B5 xover at 120Hz, rebuilt Adcom 5500 for woofers.
Thanks again!

 

[Paul Birkeland]

Looks great!  How do you like the Psvane 12AT7 vs. the old stock tube?

 

[Tom-Huffman]

After the tubes and new caps have a full 150 hours I will swap the 12AT7 back to stock and give a listen.
I learned a new phrase from my NASA son-in-law who is the robotics lead on the space station - perishable skill. They run simulations over and over up to the last minute because that type of dexterity is a perishable skill and diminishes quickly.
For me my audio memory is a perishable skill, so at the last minute I will settle on the tracks and listen, then immediately swap to the stock tube and listen after it stabilizes.  I also have a NOS Mullard CV4024 that is burnt in but will leave that comparison for another day.