Speakers that are good with tubes

Larger Ohm Walsh

Ocellia loudspeakers 

Any speakers with 95dB or higher sensitivity.

Have you already bought your "high power" tube amp?  IMHO, tube amps perform best at low power and the high power amps are a compromise to try to accomodate less sensitive speakers.  I know this is a very broad generalization and people will disagree, especially those owning higher powered tube amps.  

I listen at 1/4 to 1/2 watt per channel 98.44% of the time and most people listen below 1 watt when using sensitive speakers.  

I just piecked up an amp to play with that is less than 2 watts per channel.

Jerry

@carlsbad 1+ . Efficiency and high impedance. Horn speakers rule here. Klipsch Cornwalls are a favorite.