Has anybody pointed out yet that every doubling of power gives roughly the same amount of acoustic power increase? That is, if a 200 watt amp is 3db louder than a 100 watt amp, a 400 watts amp is another 3db louder than the 200 watt amp. A theoretical 1600 watt amp, would be 12db louder than the 100 watt amp, not 16 times louder. Basically like adding an 11 to the volume nob. Anyway, if you need to ask, you obviously haven't heard Nigel explain it.