Last I knew, they had shut down a long while ago. But their website does show a 2024 copyright.
Have you ever lived with a high “power” class D amplifier? I ask because 500 WpC of Class D will tend to perform more like 100 WpC of class AB in practice. They tend to struggle with dynamic loads (which speakers are of course) in my experience.
I would take a 300 WpC class AB Parasound amp over any class D amp of any power rating.