GaN FET Amps vs. Traditional Class D Amps


I'm trying to get a better understanding of GaN FET amplifier technology. Whenever I see a write up on GaN FET based amplifiers they are always compared against class A or class A/B amps. What I'm more interested in is how they compare to the current generation of 'traditional' class D designed amplifiers, both technically and sonically. Can anyone explain it to me?

 

Thank you.

mcraghead

you know what - my peachtree gan amp sounds lucious, pristine, weighty, pure, etc - but what it doesn't have - is the ability to be musical and inviting

its "I'll settle for this gorgeous sound of my class d amp - but ill sacrifice musicality"

 

Listen to a more conventional amplifier and tell me its not musical - its a little sloppy - but its not robotic

My Peachtree Gan 1 is as MUSICAL as any of my class A or class AB amps....It's a tremendous value.....Peachtree has a return policy. Try it.  Saying that it's not musical is just not factual. .  I feel it's actually MORE musical than my similarly priced Belles Aria which is a highly regarded amp in the $2500 range.You like ROCK.....It would be a perfect amp for you. Everyone has an opinion......

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!