GaN FET Amps vs. Traditional Class D Amps

Having heard several current Class D designs, gan-fet included. They sound fine, but I hear the lack of overtones, decay, body, and depth. They sound good though, I would not bash them, they are very clean and quiet and fast, 1st transients are their strong points, sound comes at you with impact. To me, it gets into what you enjoy, but if, over the many years, you have gained experience and an ear for real sound reproduction, class D would take some getting used to. I do love their lack of weight, so that is tempting for me, any amp over 75 lbs. I am no longer interested in it at my age. 

https://forum.audiogon.com/posts/2795609

Can someone describe how the sound of the Aavik is better? 

Need to listen to the Atma-sphere amps. To date, the best I have heard are the false tube type made in Italy. Cant remember the company name. Still not as good as tradition types to my ears. Most class D I have heard sound pretty pedestrian. 

@phillyb everything you said is what I hear. And it was exactly like that when the popular Nuforce class-d  amps appeared 20 years ago. Then you hear traditional amplification that has ‘realism’ and you notice the weakness.

However there have recently been some ultra high end brands, such as Tidal and Aavik, who now claim to have cracked class-d in sound quality and the reviews seem to concur, so I keep hopes up.

Pickup a used Aavik (Denmark) U-150 Integrated if you can find one......Hook it in to your system...get the one that Huff says has a world class DAC and MC phono amp included........each worth 8K on their own merit...End Game....if you're not blown away send it back....TMR has one around $8500.