Also, THD is usually taken at around 1kHz. In fact, THD is dynamic and unless there is a graphical representation of the THD function for the particular amp then the rating is for less than .01% of the audible spectrum.
Igitur qui desiderat pacem, praeparet bellum -- Vegetius
"I told her about my conversation three years ago with the political leader of Islamic Jihad in Gaza. "What's the difference between suicide, which the Koran condemns, and martyrdom?" I asked. "Suicide," he replied, "is done out of despair. But remember: most of our martyrs today were very successful in their earthly lives." In short, there was a future to live for--and they detonated it anyway."