Can someone please explain


What you mean when you say (whether it’s a speaker or amp or preamp) it’s darker or warmer or softer or leans to the brighter side of neutral? Are you talking about how ss compares to tubes to class D? Analog to digital? How do you know what "neutral" is? How do you not know it’s actually in the recording? 
Curious minds/ears want to know.
rsf507
Compare the sound of a speaker with the sound of live music.
What are the differences?
Then all these descriptors snap into focus:
The speaker is 'brighter' than the performance.
Or 'warmer'
etc
well, ears are like mussels need to be introduced to physical activity, developed and trained:))), but some capabilities are congenital