A friend of mine is looking for a good multi-zone amp.
He wants an amp that can power up to 6 zones and turn on or off any zone desired.
I figured you guys would have some good suggestions.

Xantech Mraudio 8x8. 8 zone, 8 source amp. Only 6 zones are amplified though. There's a few different keypads you can use with them too.

http://www.xantech.com/

I have no idea about quality or function, but I ran across this a while back... http://www.htd.com/whole-house-audio multi-channel output with multi-source selection!

Scott