The youtube file will not be ideal but give an idea...
These voices must be around you during all the concert and not only in front of you, in some case the voices comes from behind my head, around my head and beside me in the room... For example the piece begiining at 36 minute present a male voice and a female voice duo each voice must come from each side of your back head back of you...
You must see then walking and speaking...
This is anyway the best interpretation i know of this opera and the best recorded...
My system value is 500 bucks...
But my acoustic is very good...