What is the best audiophile speaker for a tiny square room?

How does class A fit into the sound quality equation for AS amps? Some people say for tubes, class A doesn't make that much difference- the way it does in SS amps. What do you think?

Class A in a push-pull amp is nice because it helps reduce distortion at all power levels. This is about the operating point of the output device- the class A point being where distortion of the that device is at a minimum from zero to full power. It is audible in a tube amp- make no mistake!

I would love to have a pair of the Tannoy Autograph mini speakers just because they are affordable Tannoys and love the retro look.

@chungjh Great that you got panels coming your way. It will open up a world of possibilities for your speaker selection.

I chose the Thiel CS3.7 because I always wanted it. It was my second favorite all-time speaker and a local sale came up, so I went and picked it up. I would be reluctant to buy a used unit that needed shipping. The original packaging is now old.

The Thiel CS3.7 has a bit less bass than the speaker i was expecting to the get for this small room, the Yamaha NS5000. Both speakers sound best in a larger space but the sound I have now is very good. I think once I get the DRC implemented I will have excellent sound. I may have to spend another $1000 to fix my driver issues (with OEM drivers) but this speaker will be my, "to the grave office speaker", so I want it perfect.

Some other floor standing speakers that I demoed and now know they would fit my room were:

Vivid Kaya 45
Paradigm Persona 3F
Magico A3
TAD ME-1 (not floor stander)
Yamaha NS5000

BTW - I started measuring my room with a Minidsp mic and the REW software running on my Windows laptop. A lot of great info can be gained especially for folks like us in small rooms. This was how I discovered a problem with my driver though I cannot hear it.

Amphion are a unique speaker using a matched waveguide voiced to work in almost any room and a rear tunedBass radiator 
using world class Seas drivers ,used by many recording studios 
for accuracy and musicality .I am using my modded Argon 3-S monitors 
with Svs 3000  SB subs which btw are the best sub by a country mile in its price class and much more , it’s a fantastic combination 
That makes a great fully range setup that can compete with floorstanders several times its cost.

Dutch and Dutch 8C

State of the art actives designed to be placed close to a wall and built in DSP. I have mine in a reflective 10 by 10 room where most other speakers are doomed to fail, but they sound outstanding. The 8Cs can go almost anywhere and do very well.