10-10-15: Inna
I don't remember where but once I read that someone was comparing the sound of 100 wt Gryphon with 600 wt Krell, both transistor amps. Same speakers,forgot what that was. Besides sounding a lot better in every respect, Gryphon also sounded more powerful. Dynamic speakers, this I remember.
What are the possible explanations?
Impossible to tell without knowing how the testing/comparison was made... My guess is they did not level match, or make quick switches between components - the two main factors that our senses need, in order to make a proper evaluation...