"A smart buyer can find high quality separates on Audiogon that when mated together, can outperform any integrated at the same price point. For example, find a Forte 4A amplifier for $600-$700 and a Modulus preamp at $800. There is not a $1,500 integrated on the market that can match this sound."
Yes of course a second hand Pre/Power can outperform a new integrated at the same price. How about against a second hand integrated. I have had 3 top rank integrated amps in my system and they were outstanding, in different ways. They are/were a Lavardin IT, Viva Solista and Karan K180. All outperformed Pre/Power combinations at a much higher price level, that I havbe heard. It is true that not every manufacturer makes the same effort on there integrated amps, but most would agree that the Lavardin IT is the pick of that companies range.
I certainly won't be going back to a Pre/Power combination. I do accept that for most manufacturers, there top, statement amp, tends to be a Pre and Monoblocks, but you can get very close to that with a well sorted integrated, that are increasingly appearing on the market.