It is hard to describe or next to impossible to describe sounds,
signals or tones or pitches.
Everybody has different hearing levels, or like in my case hearing damage.
( many years of unprotected ears, from chainsaws,
gun shooting, rock concerts, being young & dumb, etc. )
The last time I had my hearing checked, they thought their machine was malfunctioning, & wanted me to test a 2nd time.
Good quality headphones Is a personal preference, "You get what you pay for"
But I never hunt without them.
I have also wondered
( to add to your post)
does anyone think that those ear candles that suck the junk out of ear canals would help, to here those signals better
I have tinnitus (ringing ears) most of the time.