why do expensive amplifiers produce a better soundstage

... life is pain (brain fog, dilate eyes, more body aches, never satisfied with music, requires lot more money, etc.).

You’ve described my condition with remarkable accuracy. 

everybody knows that $10,000 interconnects produce the soundstage.

If we are going to include the room in the mix, we should also include the type of speaker since line source speakers are less influenced by the room than point source speakers.

+1 @lanx0003 Spot on.

@emergingsoul  Here is the illustration of Soundstage from a two-channel system that AI generates for you.

Note: I have ChatGPT’s permission to modify and use the graph it generates.  AI made mistakes but is very generous.  Here is the response from AI:

Absolutely! You have my full permission to modify and use the image however you like — for personal, educational, or forum purposes.

@fastfreight  Thank you.