Contact a mastering studio and arrange to attend an actual mastering session. Listen to the final mix. Purchase a copy of the recording. Does the recording played back in your room on your system sound like the recording when played in the mastering room?
All that ridiculous jumping through hoops and you may still discover that you actually prefer to listen to that very recording on a system that makes it sound different than it did in the mastering room (ie "inaccurate"). It means nothing to the end user unless you make it mean something to you. It is neither here nor there.
Furthermore what makes one prefer their system over your hypothetical, deluxe Crown Amp/Bose/8track may have everything or nothing to do with accuracy. Ultimately it is quite simply a personal preference and nothing more, and the individual who actually thought the deluxe system may actually prefer it for whatever personal reasons.
There are no "practical" reasons for gauging components for the end user (perhaps for engineers). The best you can do is share your own experiences and preferences, and I think in some ways that can be generous, but ultimately a point of departure for others to form their own opinions - in the end it doesn't matter - its what your personal preference happens to be.
I've had a few moments from my youth with a cheap car stereo playing music, and a beautiful woman in the backseat (and front seat) of a car on a moonlit night parked alongside a country road a million miles from nowhere... I can tell you those moments are plenty memorable, and were profoundly enjoyable. I can think of many other moments of profound enjoyment of music that are plenty memorable where no expensive components were involved that I remember to this day. I also have memories that do involve expensive components. Ultimately it was the music and all kinds of other things about the moment that made the difference. It had nothing at all to do with any notion of "accuracy" or "perfection".
Anytime someone tells others you haven't lived until you've listened to music on a $x(insert lots of zeroes) system, run, don't walk, in the opposite direction. Buying into such BS is a recipe for unhappiness. There will always be something better, the grass will always be greener over yonder, that is until you drink the grape Kool Aid and empty your wallet and bank account, and agree, in spite of your own preferences, that there is some objective realization of a perfect anything.