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

Damn George, for some one who doesn't like Class D you sure talk about it all the time.

Maybe take your own advice?

The need for higher switching frequencies in class D amps is usually based on the theory that current frequencies are too low and cause sound anomalies in the human audible range of 20- 20,000 Hz. Current class D switching frequencies are typically in the 400-600 KHz range with theory proponents claiming switching frequencies above about 1.5 MHz are required to ensure there are no sonic anomalies in the audible range.

However, this theory has never been scientifically proven and there’s virtually no evidence to support it. Several class D amp designers. including the highly respected inventor of Hypex NCore Bruno Putzeys, have publicly stated there’s no need for increasing the switching frequencies above current levels.

The human ear is capable of decoding intermixed harmonics and timing cues into the 200khz plus ---with zero jitter. Micro and macro signals intermixed. With two ears doing this as a combined spaced pair, with the micro and macro intermixed temporal cues.

So 1.5mhz, with zero distortion in all parameters might finally be good enough. Who knows. Except the amps, as good as they might be, very likely won’t make that spec.

Hearing has just about nothing to do with 20khz sine waves.
consider not looking at engineering specs .. and start looking at the literal library of research of the human ear.

After all... its about the ear, not the amplifier alone with just engineering weighting and engineering measurement considerations.

:)

Damn George, for some one who doesn’t like Class D

Damn yourself sunshine.

I’ve always said it’s the future and has always had better bass, just needed something like these GaN transistors to cure it’s ill’s in the upper mids and highs, which it’s always had from day one and never changed.
Just went off on different tangents but never got down to the root of the problems, too much dead time and too low switching frequency with output filter effect getting down into the audio band, and these GaN’s address all these ill’s.

George,
Weren't you the person who advised me to let those who like a technology go and enjoy it?

Because every time an A'gonner says they are buying or like Class D you are right there telling them how wrong they are, bringing up 40 year old complaints and claiming, without evidence, that there are technical hurdles that must be overcome before Class D becomes listenable?

Based on reading so many of your threads, I would say your biggest problem isn't technology, it's users. You just don't want people to like Class D.

Best,
E

Sunshine is a good thing.