High-end amplifier clarification?


At what point do you consider an amplifier high-end? And, why? What is a good example of a non-high end amp that just misses being high-end? Also, what is an example of an amplifier that just makes it into your high-end rankings?
ska_man
I suspect that all amplifiers here:

http://www.higherfi.com/amplist/amplist.htm

might be high end.
If the editors and columnists of TAS or Stereophile refer to the designer of the amp by first name, the amp is high-end. ;)
The amp must have at least one end 3 feet off the floor; this classification method is as accurate as any other you are likely to find. High End is in the ear of the beholder and nowhere else.