Frogman, I would hazard a guess that among nine out of ten non-audiophiles there would be consensus that the differences are slight. The basic circuit hasn't changed since it's inception. Serious differences only exist among speakers, the weakest link. You conceded to the law of diminishing returns,(which imo sets in by component, not individual person, btw) used the word 'little', and stated 5%. And then concluded the difference is more than slight.
Really?
Really?