I know of at least one person who cyoed an entire power amplifier.
Ironically, the thermistors didn't survive.
I love it when audiophiles think that the last mile can change things so magically. one small twist of one eq knob on one console before the record was cut and this blows away all cable mods they can make.
audiophiles crack me up. sometimes. they claim its about the music but its clearly not, when they get to this level of insanity and obsession about something they claim is 'all about the sound'.
and if its not cryo its some other lunatic fringe quest that never ends.