Not sure kitchen and sound system are analgias. The kitchen is more the instrument and the food is the music. HiFi is more like the taking a photo of it and posting it on Yelp. You could give me the most expensive violin in the world and I couldn't come close to what a real musician could do with a broom and wash tub. It's about skills. How much better is the food prepared in the perfect kitchen? What is perfect sound?
I was lucky enough to have some Celtic band members come over and play in my living room. Acoustic guitars and unamplified vocals certainly didn't sound like recorded music but both are enjoyable and neither were less perfect.
I do know that one of the musicians (a long time friend) listened to my HiFi made some suggestions and with a few minor tweaks improved the sound I was hearing. So I was glad to feed him.