adamdea
You are not a sound quality evaluation device
All agreed- I was using the word "electronics" to refer to the equipment before the loudspeaker (sorry I agree it probably was confusing). For example, the technology in the enormous new ish B & O speaker may be a genuine advance.Yes and no.
For something like an amplifier, yes. In my view well made amp designs from a few decades ago can work fine even now. Although here the change might something like going to 'switching' designs to give higher efficiency as engineers learn how to do this whilst dealing with the snags that hampered early attempts. (I wonder what role mains cables would have with an amp that *generates* huge amounts of *internal* 'RFI'? )
But for loudspeakers and rooms, the situation remains complicated and highly variable. I suspect people would be *much* better served by learning more about that and how to alter their setup to optimise results than by buying a mains cable. And this is an area where people at home *can* experiment relatively easily if they want to.
To me modern systems have two weak links. One is the input. If the CD/LP/download has been crapped up by 'experts' you start off down a hole you may not be able to climb out of. The other is the room/speaker arrangement. This is a variable as well as a preference and is complex, but something people *can* tweak and hope to get improvements from. *If* they have some understanding of what is involved and put in the time and effort.
It's interesting though that comparatively little heat and noise seems to be generated by arguments about loudspeakers