To get the full effect of a live kit in-room, I think I'd need about 2,000 wpc driving a pair of Wilson Alexandrias or equivalent from YG, Magico
A pair of ATC 100 ASL and an ATC 0.1/15 is more than sufficient in most home environments. Drummer and multi-instrumentalist Lenny Kravitz uses a pair ATC 200ASL and I have heard that a pair of Barefoot MM27 will also do the job (according to legendary producer and drummer Butch Vig).
Those who completely dismiss the need for such capabilities in a Hi-Fi are missing the point. It is about "High - Fidelity" which means that the setup can handle anything with the greatest fidelity. Anything less is guaranteed to deliver oodles of distortion even at modest levels when playing a "high-fidelity" recording (one that has the dynamic range of real instruments rather than compressed crap)
The big challenge with dynamics and percussion is "compression and distortion" - in order to sound realistic the system must not give out at the usual maximum of around 95 dB (mediocrity). Thermal compression and system distortion often rise exponentially above 95 dB meanwhile a drum set plays up to 110 dB cleanly....
