Monoblocks beside the speakers with real short speaker cables, separate power supplies that minimize modulation from the other channel’s power supply sag on demand, separate circuits that minimize interference from the other channel’s electronics etc. Better imaging and soundstaging, and better stability and coherence of the music all round.
Are integrated amps technically better than separates?
I'm assuming we are talking same class of amplifier and the integrated has the features you want. I'm thinking the integrated could actually be an improvement over separates due to being a more "direct" connection. Taking away the flexibility factor of separates, is my line of thinking correct?