Well, Keith Jarrett uses Audio Note speaker cables. I don't imagine anyone thinks HE is deluded about sound quality. I certainly don't. He doesn't mention his cables, but I worked in this industry and many manufacturers kept up on what he used in his system (just like Fabio, who is an audiophile).
By the way, I just came across this interview by him. It was interesting to read, and it was done in 2024. It was interesting to read that he doesn't love digital for listening
https://www.jazztimes.com/reviews/products-and-gear/sounds-of-jarrett/

