Myself first getting into hifi towards the late 90s, reading up on the hifi rags, there were still a few writers that in their own columns would express interest in the more esoteric nature of hifi.
Like putting cds in the freezer will make them sound better.
Putting two speakers facing each other with a blanket over them, to speed up break in.
I remember one writer mentioning that new Naim amps need to have the power button switched on and off repeatedly for several minutes to help burn in.
Bi-wiring and bi-amping is meant to be better.
Turning off tone controls
Turning off display
I read one time that playing an album on cd. After every track played , stop then press the next track number to play, it will sound better
Besides the usual wisdom of the fiddly nature of your Naim kit AND taking out cable burn in and snake oil I am interested in other cases where some had come across or read something about hifi that after experience has been dismissed or indeed proved right.
For those who are new to this hobby they might benefit from your wisdom.