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RE: Do you know what technology W4S uses in their class D?

You can just look on their website

"Utilizes latest generation (ASX2) ICEpower® audio technology"

FWIW I didn't care for another D amp that used ICE but that was over a decade ago. So either that maker didn't implement it properly or the latest generation is better than the previous generation I can't say.

My needs required an amplifier with voltage switch so that when I return to Canada I could bring it back with me.

Parasound's A23+ met that requirement and has a lot (enough) power too. But the international warranty is only 1 year - the dealer noting that the 2250V2 had so many failures he stopped selling the line. Add that I wasn't really impressed on some recordings where it pulled the music apart too much so as to be rather unlistenable on the female vocals like Eva Cassidy and Loreen McKennitt.

I was more willing, then, to take a gamble on Class D. Given that I have never much cared for class A/B Solid State amplifiers and the Solid State amplifiers that I like tend to cost 5 figures and up I was willing to give it a go.

Most audio companies buy chips for their DACs or transport mechanisms for their CD players, and transformers from China, etc.

I actually don't care too much about the technology and the internet forum talk on these things. They need to convince me in the room at dealers and at shows. I won't discount poor sound at a show - but if a showroom can demonstrate good sound (even in poor conditions (a show) then it will likely sound even better in a good room. W4S was the best budget room for me a few times. And with my better preamp and better speakers, it was an easy flier.



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