Update:
It's been four months and a couple things of note have happened.
A Lumin U2 mini replaced the BS Node/Sbooster for streaming duty. It's quiet, dynamic and grain free.
A NOS Telefunken E88CC in the Tubadour. I don't know the vintage and whatnot but it is gold pin, diamond bottom and the ink is chalk dust that rubs off. The Gawd-awful Russian 6h23n stock tube is suitable for target practice only. Seriously, I want to shoot it. What a bottleneck.
The DAC/streamer combo has a smooth, pure top end, a generous amount of the famous Telefunken midrange magic and a natural and cohesive stage. Music flows. Listening is a joy for hours on end.
Easily bettered by my best LP's. Average LP's bettered by my best digital (Tidal CD/MQA and FLAC radio sources).