Heresy @ 96 db would be fine with a low power SET in a small room with moderate listening levels. For movies or head banging, probably not. But for lascalas and khorns, high power is wasted on them. And unfortunately, unless you are willing to break the bank on an amp, as the power goes up the quality usually goes in the other direction. It's much easier and less cost prohibitive to build a high quality low power amp. And it's with low power that these extremely high efficiency speakers shine, IMHO.