Even scratched vinyl with a half decent deck is listenable to, your brain is quite good at filtering through the noise. Try that with a scratched CD though (even if it may not skip there's error correction and concealment happening), or a marginal DAB signal, or low bit MP3 internet radio station. I used to work for one of the aforementioned hifi companies and used to set up their tuners - FM could sound absolutely fantastic. But it had a NICAM transmission path, low dynamic range, limited bandwidth and mediocre s/n ratio. Despite that it worked beautifully. I still have my tuner but listen online now. Or through a software defined radio to the FM broadcast.
Likewise with TV, in the 90's we had decent cameras, recording, good sound and nice tubes to watch it on. But here I am telling editors that blowing up a badly sourced 4x3 cutout of a standard definition 16x9 program into HD is never going to look good however much they moan about Adobe's products.