I re-read your post above about the Denon amp. Not knocking Denon, but 400 watts denon style, and 400-500 watts pass x250.5 style: no comparison. The Pass design increasingly makes more power into lower loads with ease and grace. I could not imagine a set of speakers that would tax this amp. I understand the K-9 are serious current suckers. You need a serious power supply to cope. I get it.
Pound for pound, dollar for dollar, my money would be on a used Pass X250.5 ~ around 4k. I too am a working stiff with kids and value is a factor in my audio toys these days.
The McIntosh MC501 monos will run you closer to 6k, for approx the same power into 4 ohm and lower loads.
Another steller set of monos for the price would be Parasound JC-1.
Another beastly and great value amp would be McCormack DNA500. Pretty sure that would light your speakers up when necessary.
And lastly the Bryston 14 B-SST....600 wpc into 8, 900 into 4...
Pound for pound, dollar for dollar, my money would be on a used Pass X250.5 ~ around 4k. I too am a working stiff with kids and value is a factor in my audio toys these days.
The McIntosh MC501 monos will run you closer to 6k, for approx the same power into 4 ohm and lower loads.
Another steller set of monos for the price would be Parasound JC-1.
Another beastly and great value amp would be McCormack DNA500. Pretty sure that would light your speakers up when necessary.
And lastly the Bryston 14 B-SST....600 wpc into 8, 900 into 4...