D-SONIC SOA Class-D Core Amps. The best Class-D ?

Audiozen,

You seem to do a lot of research related to CLass D amps. Are you involved in teh industry in some way, or just a motivated consumer? Just wondering. Thanks.

Mapman..just a motivated consumer. I have always been intriqued by the 90% efficiency of Class D amps compared to 50% efficiency of a/ab amps that send a lot of wasted energy to the heat sinks. In 1958 there was testing done with pulse switching devices with poor results with current stability problems causing the test amps to blow up. When John Ulrick of Spectron owned Infinity speakers back in the late sixties with Arnie Nudell, he installed his first Class D amp into a Infinity sub-woofer in 1968. The rest is history. Regarding Wyred4Sound, EJ informed me back in 2011 that he was working on a new four piece Class D amp that would be part of the new Wyred4Sound Reference Line but unfortunately that project has been cancelled.

Class D trivia..the world's first commercial manufactured Class D amp was from Sinclair Radionics in England in 1964. It was rated at 10 watts per channel but put out a lower number than the specs indicated. British magazine Wireless World had a article written to print on the amp but there was no many complaints from consumer's with reliability problem's that the article was withdrawn and the amp went out of production.

Typo.."so many complaints"...

A recent phone conversation with Dennis Deacon at D-Sonic, he mentioned the M2 and M3 series top models use the same amps. Based on recent interior pics I came across, the M3 600M mono blocks are using Abletec amps and the M3 1500M mono blocks are using Pascal amps.