For those who have never been to a live performance, it is nothing short of incredible. Even a very small orchestra is EXTREMELY Dynamic, which is why it's so difficult to capture the performance accurately on any recording medium. The difference between soft and loud is simply too great. On top of that, you would need a world class stereo to reproduce it with any sense of accuracy & believability.
Classical music is something that has to be experienced live to be truly appreciated, especially opera. My daughter had somewhat of an appreciation for classical, so I took her to see a small local group at a theater in town. The experience was nothing like she had expected it to be. We walked out of the theater after the performance, and her first words were HOLY SH**!!! Needless to say, she had a great time.