@lator Everybody always say that the older sound was someway better in some cases or frequencies.
I'm quite sure that people get accustomed to the sound they are used to because brain adapt to get the best out of what they ear.
It's absolutely possible that listening to some kind of distortion for years can make a very clean sound too flat.
In the end it need some time for brain to be able to decipher and adapt to new sound and differences.
Something I always read is that after sometime the new sound is a lot better.
Someone attribute that to burning components only. I have to disagree.
We adapt to new kind of sound progressively.
For example I make this considerations.
In a very loud environment after days we bacame less annoyed by those sounds.
Brain tend to exclude annoying sounds.
And if we have to listen to lower volume sounds we can concentrate and ear a little better.
It's faster but it take some time too.
Considering that it can take sometime, I prefer to judge equipments from measurements. Or maybe in a doubleblind audition. But that's nearly impossible for me in my country.