Don't worry about chiming in on this topic, psyprof1 - there is no harm in pointing out that a 7x300W amp is a monstrously oversized beast that is likely to yield no audible difference for most systems. At almost ten inches tall, 125 pounds, and $3.5k it is clearly a "not for everybody" kind of amp.

There may be a few cases where the 7900 might actually serve a beneficial purpose (large rooms that open on to other large areas, combined with some of those really nasty speaker loads like the Polk RTi15 or RTi25) - I can think of one or two posters who were actually able to push a Model 770 to its outer limits in this sort of manner. In most cases, of course, the 7900 is going to be overkill (albeit impressive, physically imposing, and very gravity-obedient overkill).