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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

Showing 1 response by musicaddict

musicaddict
382 posts
 
I have had mostly good A/AB amps over the years and one tube amp. Some amps were hell with some speakers, so amp/speaker synergy is still critically important no matter what you think you prefer. (I prefer a 'system sound' which starts with the best speaker I can afford with the sound I prefer, and then adds electronics in support of it.)

I now use a W4S STI-1000 integrated in my main system. It's my first Class D amp.  I use the DEAD SILENT pre-amp switching into a dsp room correction unit, then back the the STI-1000's power amp section.

This feeds a pair of highly resolving (perhaps slightly warm) near full-range two-way loudspeakers. The sound works for me with stunning detail and treble resolution second to none with never a bit of fatigue at all. The bass is solid and tight within limits of the speaker's ability.

I agree with other W4S owners in their characterizations, and have no doubt that the ST-1000 amp can feed the load of the Martin Logan CLS. I owned SL3s as mains for sixteen years (and still own them but now displaced as mains).

If I was made of money I might experiment with other amps but as of now I fortunately do not feel the need. The W4S Class D works extremely well in my system. I have none of the Class D prejudices others rant about.



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