But cranking the volume on better gear sounds better is the whole point
I thought all hifi salesmen knew the rule: louder, unless already too loud, always sounds better.
I think it's a reasonable idea that increases in level which are too small for us to perceive as changes in volume may be perceived as changes in quality. I do not know if it has actually been shown.
Or conversely, people who don't often listen loudly would like gear that doesn't need to be cranked to concert-in-a-can levels to sound halfway nice :)
During demos, my first action was always to turn the volume down.
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