Speakers that are good with tubes

+1 Volti Razz - those things put a smile on my face every time

There is a Boutique company out there called Audio Note. I heard they make some pretty good speakers that perform well with Tube equipment. 

I’ve heard from amp builders and others how important transformer size and quality are for delivering speaker performance. No one’s mentioned it yet, and I am not finding a definitive source on the web, but these two are both decent.

https://www.psaudio.com/askpaulvideo/tube-amps-and-output-transformers/

and,
https://wallofsound.ca/audioreviews/amplification/what-difference-does-an-output-transformer-make/

My QS mono blocks have great transformers; they control the bass on my speakers extremely well, and I have compared them with some very good solid state.

What this discussion seems to indicate, then, is that there are a number of commensurately important factors necessary to creating good sound. Finding "synergy" between speakers and amps is not magic; it comes down to understanding the various factors on amplifier and speaker sides, and matching them. Then, listening.

Devore Fidelity 

Wolf von Langa WVL 12639 SON Won product of the year from absolute sound and I heard them at capital audio fest. Start saving buy them!

@hilde45 Yes, transformers are key to tube amp performance but now you are getting into tube amp selection.  The original question was about speaker selection.  BTW, the transformers for my new custom tube amp are hand wound in Bulgaria.  Most expensive component in the mix.