Power Cord Length


In another thread it was posted that power cords should be no shorter than 5 feet. Can anyone explain why a 5 foot power cord should sound better than a 3 footer?

A friend was recently told by a famous cable maker that a 1.8 meter cable sounds better than a 1 meter cable.
kana813
it seems to do with attenuation of high frequencies energy, as the noise amplitude in those Mhz range gets weaker when distance travel gets longer.
ebm01-21-2016 12:37pm"5ft is optimum for good signal flow and filtering."

Could you please explain what you mean by "signal flow?" Other than a cable that is of high resistance because of insufficient gauge, what would constitute bad "signal flow" in a power cable?