TONE

If I read your question correctly, the only thing which would, as you say, satisfy your concern is to be able to find a way to listen to real unamplified music played by real unamplified musicians in a real unamplified space.

yes, basically I answered my own question....as i wonder about the faithful TONAL reproduction of my system, not being a musician, I need to go see live music more often and try to remember the tone of voices and instruments.....

@middlemass,

The best live unamplified music I have ever heard was on Beale St. in Memphis.  Just walk down the street and you can hear many street musicians playing Blues or Jazz and marvel in the sound. That gave me a good baseline for my system. 

I have read that many musicians with perfect pitch get annoyed when turntables are off speed. Thank goodness I can't tell if recordings are slightly off speed. 

I think the difficult part of assessing the ability of your system to accurately reproduce musical tone, as is call it, is that relatively few recordings capture the true sound of the instrument.  I spent many years in the recording business and I know that most recordings are eq'd and heavily processed to achieve the sound that the person paying the bills wants to hear.  So you never really know.  I've always considered starting a thread in which we list some recordings that we believe accurately convey the true sound of musical instruments, but like so many threads, they just turn into arguments and lectures, so I dropped the idea.  All this said, if you're system reproduces the human voice accurately, you have a good shot at having a system with good tonality.  That's how Alan Shaw from Harbeth designs speakers and he's doing pretty well.