GaN FET Amps vs. Traditional Class D Amps

All "traditional" Class D amps do NOT sound the same.  You have to compare specific models.  The devil is in the details.

In general GanFet  ups the ante in terms of performance level possible. Does not mean all GanFets are necessarily better.

I have several Class D amps including Hypex Ncore,  Class D Audio GanFET, and other chip based Class D amps. Have owned "high end" Icepower in the past as well.

They are all good but each different.  The Class D Audio GanFET is the best performer in all regards.  HYpex Ncore is no slouch but sounds clearly different.  That’s just one specific Hypex Ncore amp.  There are many designs  at various price points with different power supplies, opamps used, etc.   You have to compare specific models to draw any meaningful conclusions.  

Buckeye Amps on GaN FET…

https://www.buckeyeamp.com/blog

That blog post by buckeyeamp is your typical ASR tripe. He whines that the GAN transistor shows little measurable improvement over mosfets used in most class d amps. 
 

So what? We are interested in how things sound. Like the OP I too am interested in how GANfet based amps SOUND compared to the usual Class-D offerings.

The limited amount of UCD and ice power amps I have heard so far were all smooth, clean, and lacking realism or lifelike sound the better class A/B amplifiers can achieve.

My GaN FET amps sound every bit as good as my tube amps without the heat.

Thank you for all that took the time to reply. I appreciate it. 

I know I wasn't specific and was probably confusing as well. What I meant by 'traditional' was anything that is not GaN FET based. I should probably ask an additional question. Besides GaN FET class D amps, are there many other class D types out there?
 

I should probably have stated up front that I know almost nothing about class D amps other than they typically seem to be smaller than class A/B and class A amps, they are considered to be more efficient and because of that typically don't get as hot as those other two classes, and some might say that they have less "body" to the sound or can sound lean. I'm not saying that those are fair assessments. They are just general statements. I've heard some cheap class D amps and they can sound cheap, but not always. I've heard some better class D amps (4 figures+) that have sounded very good. I haven't gotten to A/B compare any against class A or class A/B, nor have I been able to compare GaN FET based class D amps against non-GaN FET based class D amps. 

I guess one of the reasons that I asked the question in the first place is that what I'm hearing about GaN FET based amps makes it sound like it's a better technology, but better how? In what tangible way? Does it improve the sound (I know that's a loaded question - sorry). Basically I'm trying to understand what all of the fuss is about. I'm not trying to bash any particular technology. I'm just trying to understand. 
 

Thank you.