For 2-channels, the recommended amplification is 100w. Jim, Dennis, and company aren't in to obscene over-amplification. My gear from Dennis isn't requiring crazy amounts of juice, even though they are only in the mid-80 sensitivity level, too. At 100w, these puppies will clear reference level peaks at 1m... which is louder than I need at 2m.

Beyond that, many here have opined this line to be the best speaker they have heard. Period.
I don't have that experience, yet... wouldn't mind it, to be honest. Maybe someday.
Regardless... Does anybody know the actual woofers and PRs used? At this level of his gear, I'd expect Seas, SBAcoustics, Scan-Speak, Audio Technology, etc... But the Raal and Accuton are both solid drivers!