Atma-Sphere Class D… Amazing

Jerryg123, I am running an Atma-Sphere MP-3 with Vcaps and Caddocks. Tubes are Amperex Bugle Boys. 

@pstores you've evaluated these amps exactly the same way they were just described to me by an AS dealer.  "They sound just like the S-60's above the bass"  I'm currently using the MP-3 + S-30 in one of my systems and Pass in another, so you've pretty much nailed it for me now.  Thanks for the review.  Looking forward to cooling things off 😎

I am still waiting to see the measurements of this amp. Have they been published yet?

Whether or not it "outperforms" other class d amps can only be judged by the specs. Comments otherwise are purely subjective opinion which have no factual basis.

Personally, I commend the designer for producing his own design. So many just take oem modules and stuff them in a box.

I will say though that I will be greatly surprised if they perform anywhere near the products designed for Hypex and Purifi by Bruno Putzeys who has been designing state of the art class d amps for over 25 years and holds numerous patents.

When one can buy a complete 2 channel Purifi amp for $1000, one also needs to wonder about the cost of these amps in comparison to those made by Hypex and Purifi. I doubt they perform 5 times better and even if they did, the distortion of the Purifi is already below the audible threshold for most people. Why pay 5x the money for something you can’t hear?　Of course they may have a distortion profile that some find enjoyable, but that is a matter of taste, not pure performance.

Another spec sheet jockey. 

Purfi Amps and integrated shave never lasted more than 60 days in my system. 
 

I do like Nucor Class D had the Bel Canto ref 500 in my system and now one of my son at Grad School has them. He still enjoys the heck out of them.