Class D question...............

de gustibus non disputatum est

Martin Colloms addressed the question of class D amps in a recent HIFICRITIC. He concluded that their designers were ignoring factors that had always been considered important, listing 19 of them. He concluded, among other things:

What this means:
􀂄I consider that elements of the audio industry have exaggerated the need for High Fidelity enthusiasts to adopt ‘Class D’ amplification.
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The claimed efficiency advantage is largely valueless except to save for heat sinks for very large sub woofer amplifiers.
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High frequency and radio frequency noise is a vital issue and has not been sufficiently addressed with Class D designs. Class D amplifiers conduct and radiate substantial wide frequency range noise, both correlated and de-correlated.
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We know that high frequency noise degrades both the sound quality of the connected audio system and the amplifier itself.
HIFICRITIC:Are Class ‘D’ Amplifiers High Fidelity?

Other parts of this are on the HIFICRITIC web site.

Audiofeil: Had we but world enough and time. And infinite amounts of money ,then we would not have to seek the advice of others who are in a better position than we are to hear things and evaluate them. Colloms recently tested 4 class D amps. His mag. is supported by his subscribers and takes no ads. His advice is not colored by what is in his own economic interest. I simply listed his opinion, I neither endorse or reject it. My own interest in class D waned years ago. I listed a source for those who are interested. . To all of those who tell the posters that no ones opinion but ones own counts, that is ,in the final analysis, true, but no one forms an opinion in isolation. I fail to see the harm of listing a finding by a recognized authority ; it seems infinitely preferable to puffing oneself up and shouting that , OF COURSE, THE EQUIPMENT I USE [OR SELL] IS THE BEST.

Class D is the technology of the future, always has been and always will be.