You know when a stereo sounds good when the instruments start sounding like instruments. When a guitar sounds like strings vibrating and wood resonating, and so on and so forth. When you walk by a closed door of a room where the system is playing and you're not sure right away whether it's someone inside playing live or a recording.
How do you know when a stereo sounds good?
When do you know your system is pleasing to listen to? How do you conclusively prove to yourself that your system sounds good to you? How do you determine that you enjoy listening to music through your stereo? Do you have a suite of measurements that removes all shadow of a doubt that you are getting good sound, sound that you enjoy? Please share.