I know of one instance where Outlaw was not sufficient--Dennis was trying to drive 5 M80s + 2 QS8s at >100dB for hours on end, and the Outlaw 5 channel amp he had kept biting the dust. He eventually replaced it with Parasound Halos.
That, I think, would definitely be a border case.
You can have five of their monoblocks for almost the same cost as their 5 channel 200 watt per channel amp. As long as you didn't put all the amps on the same breaker, I bet he would be able to drive his m80's even in that situation. Though the five monoblocks would take up a bit more space in the rack.
