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Class D amps that are superior to all or most?

Recently, I have heard about some Class D amps that may be close to the best there is regardless of class. Certainly, this technology has been in development for decades. The main issue has always been the switching power supply. In this regard, I have taken notice of AGD. They have created a whole new power supply that “switches” at a frequency 100 times the normal silicon based MOSFET. The designer uses a gallium nitride based PS. Interesting, it is enclosed in the KT88 glass envelope that sits on top of his amps. I am aware of two more pricey amps that seem to be also at the top- the Solution and the Merrill. There must be others that compete for the title. After my thread, “Is there a SS amp that can satisfy a SET guy?”, I am still on the quest.
Don’t want to spend $50K!
mglik
georgehifi's avatar
georgehifi
10,312 posts
 
there is no "flawless" amplification class

I didn't say flawless, I said the "closest" to "being technically perfect", which is still but a dream within a dream.
And amps aren't designed using maths, EE laws and test instruments, and then fine tuned using the same, anyone that doesn't do this, I suggest you stay well away those voodooists and snake oilers.

Cheers George
kuribo
524 posts
 
I didn't say flawless


Really?

The purest form of amplification if "done right" without any other flaws (except for heat) is Class-A

georgehifi's avatar
georgehifi
10,312 posts
 

kuribo
Really.

Really! then look again, and give your      a rest.
"most" being the operative word
Good Class-A IS the most perfect amplification so far
and this again "closest" is the operative word
they are the closest to being the perfect topology so far

Cheers George
mapman's avatar
mapman
22,406 posts
 

@mapman What are the best Class D in your opinion?


Well can’t really say having not heard them all. Whenever I listen to my Bel Canto ref amps I think what the h-ll else could I ask for? My BC c5i is very good within limits. My Vanatoo active speakers with biamped Class D in each are golden. Even my little $80 Fosi Class D amp built around a TI chip surprisingly drives kef ls50s very well which not just any amp can do. I’ve heard Veritas and others at shows. All top notch. Anthem STR another good one I have heard and recall. How good seems to come down to power supply and in some cases well executed input circuits especially for use with tube preamps. Looking forward to auditioning some of the latest to come out using GaN transistors, etc.
mike_in_nc
1,159 posts
 
>> Anthem STR another good one I have heard and recall.  <<
That is class AB, not D.

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