How do you know when a stereo sounds good?

When I get goosebumps or chills I know its good. However, the real test is certain songs will bring me to tears. 

Interesting discussion thread. This question has proven to be difficult to answer for a few people. It should be relatively simple. 

There is no right or wrong in this hobby. There are only personal subjective preferences to what makes music sound good to each individual. I don't understand why that is so hard to understand and accept. 

Your room acoustic treatments are tweaks. You are modifying the spatial volume of your room or affecting how the sound waves reflect or diffract. Whether you modify signal before the speaker or modify the sound waves after the speaker doesn’t matter. You are still tweaking the sound to suit your own personal belief of the ideal sound. Your ideal of what is good is not necessarily anyone else’s ideal. 
 

If you have to tell people they are believing in magic because you can’t hear what we do, then you need more art in your life. 

Less posting. More time listening to music.