@nightfall the Tektons are very tube amp friendly. that said, 4 wpc should be plenty for any 98 dB speaker. something wasn't right. I am currently sitting here listening to my 4 wpc tube amp (AD1 output tubes) driving my 98dB Horning speakers. I'm about 1/3 volume, I hardly ever get above 1/2 full volume, and before I get to 1/2 full volume it becomes very hard to talk over the music.
Jerry