Since we have an interest in using some of the products from Purifi Audio in a new project this article makes for interesting reading ;)
https://www.hifishark.com/article/visiting-purifi-audio
(https://hifishark-images.s3-eu-west-1.amazonaws.com/articles/visits/2020/purifi/Image_14.jpg)
Embarrassing the big boys at their own game.