I'm currently auditioning the B&K 700.2 and the Outlaw 7700. I was able to get a demo B&K 700.2 from Magnolia for about same price as the Outlaw 7700 (the 700.2 is $3000 MSRP). While I think the Outlaw sounds about as good as the B&K (there are subtle differences), there is little in the way of power filtering on the Outlaw making it very finicky as to power coming from the outlet.
The Outlaw pretty much requires a dedicated circuit as even with good filtering other equipment on the same circuit will make the transformers hum. This is not ground loop hum coming from the speakers, but mechanical noise coming from the amp itself. It is audible from my listening position some 7 feet away from the amp. Even after putting it on it's own dedicated circuit, the humming comes and goes.
This might not bother some people, but it bothered me, particularly since the B&K does not suffer from the same problems.
Outlaw support has been great, BTW. They shipped me out a replacement unit when I complained about the humming on the first unit and have shipped me out a DC filter to help troubleshoot the issue. They also extended my 30 day trial period when they sent me out the replacement amp.
If I wasn't able to get a demo B&K amp, I would have no problems with the Outlaw 7700. Would probably live with the humming.
It's a well built amp in all respects, except I think they had to compromise a bit on the power handling. My thoughts are that for a piece of electronic equipment it should be able to handle even fairly noisy power.
However, sound wise, it's a very good performer.