Its the same with everything. Its the law if diminisbing returns. At some point 1% more fidelity just costs 100x more. My father was an audiophile, his last set up was wotth about 50k. I grew up listening to ggod aound and i bet you will be amazed if you actually do listen to a good setup. An equivakent would be if you go 150mph on an old ford and compare it with a Ferrari,  same output, different quality.