This is not a best list this is a subjective list of influential products. Heck the guy even says that he didn't like the AR 3 but put on the list because he can't ignore it.

He also basically calls the Crown DC300A "Crown sounded like early solid-state. But it was powerful, bombproof, and drove the early days of the progressive rock revolution and what was to become high-end audio."

In other words easily outclassed today but began the road to quality. Mostly interesting because it forms a history of some of the things that began down roads for good or ill like speakers using metal woofers.

There are bizarre things like the PSB Alpha which is there because of bang for buck in its day but the new speakers from many other speakers in that price range easily beat the Alpha...thogh the Alpha B is still a very good speaker for low money. But even the reviewer says there is better.

This is not a list of best of products...innovative perhaps.