Which Class D Amplifier? PS Audio, Ghent, Nord, Merrill or other???

Thank you ricevs, Tim, and Jetter... Admittedly, I have been soaked in music since I was a tod... The only reason why I did not become a professional composer is that my retinas failed me in the late 1970s and could no longer use pencil and paper, so I switched major and took a degree in Comp Sci instead.... Good move, as I managed to make a reasonable living with the maddening machines until I retired at the end of '18. Yet, throughout all this time, music has continued to be an integral part of my life in one way or another.

I have no idea if I have expertise beyond anyone else, or if my ears are good or not, but they are the primary tool that I use to perceive the World... What I sometimes post are the stories about the beauty of music and sound that my ears tell to me... It is my joy to continue to share with you Audiogon friends the tonal magic that I hear through my system.

Saluti, G.

Hello Tim, Bruno Putzeys has left Hypex more than two yers ago, and as far as I know, he is not involved at this time with NCore technology development.

He has since founded a new company, called Purifi:

https://www.purifi-audio.com/

And within Purifi Bruno is developing new class D technology.... No, as far as I know, Putzeys may not be applying GaN transistors in his new design.

Saluti, G.

Tim,

The input stage on an amp is not an output stage.  Output stages have to drive a speaker, so you would not want current limiting.  The input stage is just an op amp.  Most integrated circuit op amps cannot drive over 100ma.  They are using a discrete op amp that can drive 250ma.  In fact, the circuit will never need much current at all.  As all that will come out of it is a few volts and driving maybe 5K load.  They are basically bragging about their discrete op amp.  The spec has very little to do with sound.  You could have a circuit that could only drive 50ma that could sound better.