@charles1dad For me -- as a philosopher who thinks about aesthetics and questions of subjective taste -- the question is especially interesting.
If everyone had their own unique taste, then there would be no reason to converse about it. There would be as much reason to talk about how a speaker sounds as talk about what that slight twinge below my left knee feels like. It would be indescribable.
But we do talk about it -- we do compare, argue, agree, and influence one another. We have a crude vocabulary for acoustic experiences, but it does work for us. The reviewers who understand this are very popular because they know how to connect with a variety of listeners.
This ability to communicate across the divide of our subjective experiences means that there is something like inter-subjectivity (or even objectivity, properly qualified) which permits conversation about audio. Those conversations are built not off our differences, but upon what we share: a biology, a culture, a physics, and a language.