I think this question is interesting. For me most modern concerts already use amps and speakers and may sound worse than good systems at home does. What they usually have are very high SPL and base you can feel but the state of the art system can already do that.
For small, acoustic groups there is more difference. I have a hard time pointing to exactly what it is but I would say the live music wins here. I don't have any high-end system at home but have heard some at shows and dealers and they were still not as good as live as far as I remember.
I don't go to listen to classical orchestras often but have in the past. Here there is also a difference but great systems are still very enjoyable. They may lack some of the scale or ability to sound like an orchestra playing 20m from where your are sitting.
For small, acoustic groups there is more difference. I have a hard time pointing to exactly what it is but I would say the live music wins here. I don't have any high-end system at home but have heard some at shows and dealers and they were still not as good as live as far as I remember.
I don't go to listen to classical orchestras often but have in the past. Here there is also a difference but great systems are still very enjoyable. They may lack some of the scale or ability to sound like an orchestra playing 20m from where your are sitting.