I dont know and you deserve a reply.
I would look the company's history, metal used and production methods.
I remember buying JBL speakers before they were sold, re-sold, etc b/c they were well built by craftsmen, used HQ wood and speakers, and used in recording studios but at the time, used little or no advertising b/c the customers word of mouth sold them and bullet proof connected ti dual Phase Linear amps but that was yrs ago
Sorry off on a tangent