The biggest limitation is that most people who work in audio for a long time all believe it is still 1980. Many are ugly and fat and never spend a lot of time doing research or tests.
When you do not understand music and sound you will never understand audio either. I asked many people in audio what the properties of sound are. And I asked what the most important part is what influences our emotion. I also asked how the human emotion works?
They all had no idea. So I asked to an audioshop owner which properties you will take out when you replace this cable. (which brand he sells for over 20 years)
He said; I have no idea. And when you replace it by the other cable you cannot tell me which properties you will bring in?
I have no idea he said.
So I said: this means you never have any idea why the sound and stage of an audio system is what you hear?
He said: I don’t know.
So I said: this means that you connect an amp, speakers, source and cables and you will listen to the endresult?
He said: yess.
But you have no idea which properties you take out and which you bring in when you change one part in your system?
He said: I don’t.
This proofs for 100% that all these people do audiogambling. This also proofs how limited most people are in their knowledge and insight.