The speakers love tubes. Have used them with tubes down to about 8 watts, which is not enough. They should have about 20 watts plus and they are fine. The designer used 40 watt tube amps in his listening room and at shows.
The sound is effortless and non HIfi. The bass is very natural like a real instrument not a "wow" bass and the tweeter is detailed but not bright. I listen to a lot of jazz, and am a longtime deadhead, lots of live recordings that are very well recorded; I hate hifi bright sound. These might not wow your friends when they walk in the room but they will be tapping their feet after a few minutes.
Hope this helps. I can ship but they weigh about 70 pounds each without boxes. Let me know if I can be of more help.
Peter