Hey Scott. I have a speaker rated at 103 db. At least based on experience with my system, a high powered amp was not required to achieve the dynamic energy you refer to. Ive gone from a high powered amp to a small SET amp. The first amp I used was a 160 watt OTL amp. A fantastic amp, but not the best match for my speakers as I was limited to use of 2 or 3 clicks total with my preamps volume control. Ive tried some low powered amps with unsatisfactory results, until I used Art Audios PX-25, 6 watt stereo amp with fantastic results. Though, they really shined in the dynamic energy department after I inserted the new power cords and cables from Basis Audio. Note, that my subwoofers are powered by an amp driven by the output of the Art Audio; thus your mileage may differ.
I am unfamiliar with your speakers and associated gear. If others that have some of these components can achieve this dynamic energy, then Id think it is not a component issue, it is a synergy issue. Certainly explore the use of other components with your speakers. But I would not limit this to say looking only at higher powered amps. In fact, like my OTLs, the sensitivity of some higher powered amps may make their use impractical with your speakers. Also, you may want to explore other cables/power cords, etc. I was shocked that changes in these products did significantly more than what I expected, which was a best a slight shift in various sonic attributes.
I am unfamiliar with your speakers and associated gear. If others that have some of these components can achieve this dynamic energy, then Id think it is not a component issue, it is a synergy issue. Certainly explore the use of other components with your speakers. But I would not limit this to say looking only at higher powered amps. In fact, like my OTLs, the sensitivity of some higher powered amps may make their use impractical with your speakers. Also, you may want to explore other cables/power cords, etc. I was shocked that changes in these products did significantly more than what I expected, which was a best a slight shift in various sonic attributes.