Ever sit there one day and listen and everything sounds great and the next day you listen and everything sounds horrible? Well besides you changing everything else also changed. Go from a sun shiny day to a rainy one and back and you will get a good dose of audio interaction with the forces. Do the same from night listening to day listening, or seasonal listening or one of thousands of interactions and you will experience the system sounding different.
Want to know how much of the recording you’re actually hearing? The easy way is to go from the live room of a recording studio and listen and then go home and listen to see if the recording is the same size. If you do this most of the time you will be shocked at how much smaller the soundstage is from your home system as compared to your live experience, with the exception of close miking. In most cases you are maybe hearing 1/10 of the actual recorded info on a typical stereo setup (at any price). Ever sit there and am amazed to hear this incredibly huge soundstage that goes past any boundary in your room? You’ve probably just got a lot closer to the real size of the recording. How did that happen? The audio signal was more in-tune with the energy surrounding the info. Take that same recording around to your different friends systems and guess what. The stage might be as big on them but more than likely that same recording will be different sizes on each system. You can do this back and forth from system to system and you will find that some of the big stages on your system will be smaller on theirs and some of the big stages on theirs will be smaller on yours.
MG