This is pretty basic stuff. The OP wants to convince everybody that you can buy a $500 amp but put a $10 worth of isolation feet on it, it will perform like the $60,000 amp. You know this isn’t possible. Most of the experience audio people know the facts of room dimensions, diffusion and absorbing panels on all 1st reflective points, system synergy, clean electrical power, isolation, on and on. Cheap components in a good room will sound like cheap components, but a quality 6 digit system in a bad room will make the system sound like a $500 Sony.
Most audiophiles know they need to do their homework before buying the first piece of audio equipment. This has been stated in many other forum threads on agon, I’m just restating the obvious that has been said before: If building a home, The room needs to be built first with the correct dimension. I know people that have had the professional people build the room that cost many tens of thousands of $$$. Power requirements, I have had many dedicated 20 amp circuits put in my custom audio room. Overkill, not really, so cheap before drywall is installed. Then you have diffusion and absorption panels placement.
Now you can go out and start gathering info, attending audio shows to get a feel for what’s out there. Joining an audio club will also give you insight into what’s your buddies are using and how it sounds.
most of us went the cheap route decades ago mainly that’s all we could afford. The more you make the more you can spend on audio gear. Now for me, I buy quality gear, the best for my room and for my ears. This goes for my main system and 2nd and 3rd systems in the house. For good stuff it takes money. For example in my 2nd system, my speakers cost $15k and they sound very good, but there are much better speakers at much more money that would require a bigger room which I don’t have available