Strange speculations that the medium makes no difference. We certainly have clear evidence that a well treated film in BluRay on a high definition screen can have significantly more detail and camera perspective nuance than a regular DVD on the same screen or an older one. Consider a Criterion BluRay on 2k or even 4K in a few instances LCD or OLED today in comparison to what you saw in 1995.
But there is probably much greater variation in sound reproduction dependent on variety of equipment, sonic resolution and balance, and room ambiance. Always a moving target.
Your TV analogy doesn't quite hit the mark. Yes, 4K and many other film remastering does make the picture quality good to amazing. The thing is, our eyes can actually see in the 'resolution you're watching on your 4K Oled. Our eyes can differentiate all of the colors, shades and depth that these transfers have to offer. Our ears a totally different matter. Human hearing tops out at 20,000KHZ, a recording made at 24/192 extends to 192,000KHZ. We can't even hear this extra frequency. IF you are over the age of 60, you most likely can't hear over 12,000KHZ. Much of what you find over Nyquist in recording is shaped noise, and filtering to remove ultra-sonics that can actually hurt your system.
You are correct that there is a lot of variation depending on equipment, and especially your room acoustics. Most stereo equipment can't even send a full hi-rez signal through the chain. Your tweeters don't extend high enough, your pre-amp or receiver downsamples, or your amp is only good 20,000KHZ. Unless you only purchase equipment with independent measurements, you have no idea what you are getting. Generally, the more money spent, the worse the measurements. If you honestly want to up your sound game, the best single purchase you can make is buying a USB microphone and learning a very simple, free program, called Room EQ Wizard. Then you can actually see what you are hearing, and adjust from there.
Again, most of this hi-rez, expensive cables, power conditioners etc...are all snake-oil. There is little to no science behind any of it, and none of it will pass a blind A/B/X test. It's pure marketing BS, to sell to subjective audiophile types. If any member here truly wanting a better sound when they listen, please PM me. I'm happy to help.
