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
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The finest amplifiers I've experienced, that utilize class-D circuitry, are clearly the Mola Mola. The Genesis of their amplifiers (and other components as well) resides with the engineer who created the UCD module and the N-Core module. Understanding the proper topology when using these modules is key to the overall performance of the amplifier in question. Over the years the engineering team at Mola Mola has continued to refine class-D technology. Consequently, the sonic performance of the Mola Mola products defies the assumed notions of class-D performance. Mola Mola's Kaluga mono block amplifiers started it all and now continues on with the Kula integrated amplifier, and their brand new Perca stereo amplifier. Whether it's about class-D, class-AB, or A, the Mola Mola amplifiers are simply fantastic and represent the very best for the money (and a lot more).  They are transparent, 3-dimensional, detailed, dynamic and oh so musically involving.  Mola Mola is where it's at. 

IMO, Aavik class D amps (I own the Aavik U-280) are far superior to anything class D I've heard so far. I would have loved to compare it to the new Atmasphere class D amp but since I only have integrated amps, i.e. no preamp, there was no way for me to audition. But I've heard great things about Atmasphere and AGD amps as well.