The problems at Hegel are in line with most hi-fi vendors. They cannot keep up with digital and streaming. Hegel products look great with fantastic materials and haptics.
Under the hood, they are lost. Instead of focussing on ridicules damping figures, they should focus on bringing the great user experience they offer on the exterior side also to their interior & software.
The problem lies clearly on their engineering lead. Watching the videos on YouTube, he tries solving problems that are no problems. This leads to an over-complex design. Yes, they sound great but they would sound the same with a prefabricated class-d module they’d just need to put into their nice chassis. Amazingly, the lead engineer plays in a rock band and we know what this causes to hearing abilities.
Check the parameters of their network interface. It’s prefabricated modules from China and guess who delivers the software / firmware that runs on top. This is the core of their problem. They focus on old-school amp design with voodoo engineering while lacking software and digital. My recommendation: Retire the lead engineer and thank him for past achievements. Put some software engineers in charge instead.