Alan, you say you can't listen to horns, maybe what you are hearing is artifacts from the amps. I use Altec's on my PP Mac MC40's and get zero listening fatigue. A lot of folks can't listen to horns on SS amps it seems. I've never tried it, sometime I will. I just know that a few watts can push them loud with no distortion and the dynamics are incredible. I've listened to some very expensive speakers and walked away very unimpressed.
BillWojo
BillWojo