GaN FET Amps vs. Traditional Class D Amps

The company that created the NCore amplifiers, Hypex, is now a full 5 generations beyond NCore.  Their latest circuitry is call Trajectum.  This advanced technology is used in Mola Mola amplifiers.  The performance of these amplifiers is a significant step forward in sound quality.  They have the speed and dynamics one expects, but are also wonderfully 3D, have body and presence, and beautifully smooth high frequencies.  They are found in Mola Mola's Kula integrated amps, their Perca stereo amps, and the forthcoming Ossetra mono amps.

Orchard Audio has terrific Gan amps, I think the tech has really evolved into something quite remarkable. 

I can't say enough good things about the Atma-Sphere GaNFET Class D monoblocks, which have been in my system for the past four months. They have been a big part of the transformation of my listening experience.

The A-S monos replaced a pair of excellent PS Audio M700 class D monoblocks, which used the ICE modules along with some fine-tuning of the output stage to improve the musicality of those amps. For me, the M700s had earlier replaced the classic Pass-designed Adcom 555 stereo class A/B amp, which sounded smooth, but emotionally subdued in comparison to the M700s.

In comparison to the M700 ICE monos, the A-S GaNFET monos sound much more transparent and smooth in the highs and midrange. When paired with the planar-magnetic drivers in my new PS Audio FR10 speakers (acquired in January), the A-S monos have incredible synergy. Their amazing transparency and smoothness make them a perfect match for the low-distortion drivers in the FR10 speakers. This is the sound that is often described as open and transparent without harshness.

The low frequencies are also outstanding with the A-S monos, but they took a bit longer to develop in my evolving audio system. With a recent upgrade in my streaming gear to the Innuos Pulsar streamer, I am now also hearing the deepest and most natural-sounding bass I have ever heard in my home system. (Listen to Joe Morello's opening drum solo on "Take Five" from the album "Morello Standard Time" and you'll know what I'm listening to.)

Anyone who questions the musicality of GaNFET Class D should listen to the Atma-Sphere Class D matched with the right sources and speakers. The realism is amazing! 

I have been listening to the Mola Mola ossetra mono amps for the month. This is seriously excellent sound paired with the Perlisten s7t Limited edition speakers. The soundstage, imaging and separation of instruments is astounding. There is a lot of ( I never heard that before) with these amps. Microdynamics. This is in comparison to the Dartzeel 108 m2 which I listen to for many years.  

@snook2 Those Mola Mola amps are serous Class D. You’ll never see a GaNFET go toe to toe with high end Class D amps like Eigentakt’s or the best NCores let alone a Mola Mola. I dare anyone to A/B these. The only claim to fame I ever here is "GanFET technology offers several advantages over ’traditional’ Class D amplifiers." Bruno Putzeys has overcome any advantage GaN has in switching speed. And the amps can be built for much cheaper with higher wattage than Gan’s. "Traditional Class D" found in mainstream integrateds and even some high priced name salon manufacturers won’t win in a fair fight. But there’s a few very good Class D, when well implemented, can sound as good for half the price and double the wattage of overpriced GanFET amps.