Well you need to know the history of audio equipment for it to be meaningful.
Knowing what stuff is great, or a dog.. What stuff never appears for sale because it is so great no one sells it. vs never for sale because no one ever wanted it in the first place.
Stuff which was a super deal when it came out. Or totally overpriced...
Agree telling anyone in a few words is not going to happen.
Just the fact of naming some item changes it in the market.