Most impressive youtube demo clips

@cleeds 
1. QED
2. We are talking about an idea of, not a replacement for.

Of course you can use YouTube to get an idea of how well a system sounds. If you can't or think you can't, then there is something wrong with how your brain processes data and phenomena. Even if you are not hearing the actual system, which you obviously are not, the brain is capable of interpolating the data to make a best guess at comparative interpretation of how you perceive the video.

@cleeds I shouldn’t have said "wrong." I should have said "possibly lacks the capacity to"
There appear to be varying levels of cognitive abilities in different brains and some of us may be able to discern different things. This is not to imply a deficiency in general but in a specific ability. One may have other areas of superior ability. ;-)