ACTUAL MUSICAL SOUND VS. MEASUREMENTS

Mapman. Do you mean that humans did not make music before they could measure it? That doesn’t make sense to me. There are some tribal people today (I think) who make music and don’t read or write and have not heard of notes on a page.

Mapman is exactly right..., music would be all out of tune without measurements.

Take a string instrument as an example. On a string instrument, one octave is half the string length, and each subsequent octave is half that length.  Same goes for an organ pipe. 

Every note in the octave has an exacting length to produce that note in tune.

Get the measurements wrong, and everything is out of tune.

Basic engineering. When you are buying a car or a home, do you look for quality construction and actual measured performance. Or do you trust tales of "italian soul"? Same thing.

Poorly designer equipment will still sound great with some music in some room. Say, your room has resonances. Well, speaker that dips at those frequencies will sound great to you. Flat speaker will sound horrible. So there. Equipment that measures oddly is just and equalizer.

Why, cables will greatly affect old type tube equipment where input or output impedance is reactive. Poorly designed power supplies will be sensitive to power cables.

Now, Ethernet cables do not matter. Seriously. :-)