It is interesting that one can box yourself in with a lower watt tube amp, and deny yourself the vast multitudes (and clear large margin majority) of 83 to 90db efficient speakers...I check efficiency in every review and simply say meh...it will be a while before I lose interest in efficiency, and I'm happy with the sound of my massive 12 watts into horns...the dynamics are there, the clarity is there, the musical "correctness" is there, and I'm there.