Tube amps should be seen as ONE unit with a matching Speaker (high efficiency, simple X-over...). The magic is in the first few watts.
When it is done right, you hear in the first 3 seconds why 2A3, 45, WE300B and others have such a huge reputation.
I listened in the 90's to such a Wavac 300B - with NOS WE300B -, an Original from Nobu Shishido, in combination with a 99dB Horn Speaker (+slot horn tweeter, fast, fast, fast, a Korean Design) with Basis Debut vac. Graham 2.2 and a Takeda Miyabi Cartridges. It was one of the super rare demos where the Visitors didn't leave the room. They waited the 40 min. for the next 20min run. That was the moment for me, where I got the impression what's all about.
That was the real High End. A perfect combination, a very impressing Demo.