Atma-Sphere Class D… Amazing

Real KNOWLEDGE in audio.......is how something sounds......there is no common Knowledge of sound.....because there are so many variables......believe it or not.  There is lots of technical knowledge.....but that does not necessarily correlate to sound quality....

Are there clear evidences of the superiority of one GaN amp over other GaN amps?

Concentrating just on GaN amps,  the observations made for Atmosphere GaN monos may well be applied to a number of other GaN amps. I honestly can see no proof of superiority except that I read a number of  subjective expressions. I readily believe that Atmosphere d amps sound wonderful, and would really like to know more on how much better are they than the other GaN amps. This thread, so far, didn't help me in this. Too many subjective points of view. I think it is not timely comparisons with tube stuff, SS can hardly give you the same lightness, 3 dimensionality and body. These are just two different concepts, you may like one more or the other. I like tube gear more but also enjoy in some degree class d, which i trust gives the best in SS.

@pstores , did you really made an ab comparison of Atmosphere class d with the Peachtree or Voyager, or some other GaN amp?

All GaN amps will sound completly different from every other GaN amp and also all Class D amps using mosfets......the GaN transistor may be one thing that improves sound but it is just one of an infinite number things that change the sound.

Here is a list of my candidates for excellent class D amps at lower prices (under $10K)

1. The VTV Purifi Eval amp.....around $1200

2. Orchard mono blocks (GaN amps) $1500

3. VTV Purifi stereo amp using the New Purifi ET704 modules and discrete input stages using the better Sparko labs op amps, Sparko labs discrete regulators and WBT negtgen jacks.....$2100

4. Dual mono stereo version of above. $2260 or mono blocks $2600

5. Orchard Audio Starkrimson Stereo Ultra (GaN based).....starting at $2500 for basic stereo....options for dual mono and extra capacitance....

6. Peachtree GaN 400 and LSA Voyager amps (GaN based)....basically the same amp with the same modules and power supply $3K or less

7. The Atmasphere GaN mono block $5400 the pair

8. AGD mono block Audion GaN based amps.....$7500 the pair.

9. Hopefully soon to be released.... the Mytek Manhattan amp....stereo amp using GaNs.....something like $7K.

These need to be all compared with each other.....Who is volunteering?

Here is a real sleeper....and maybe a super amp?:

Peachtree has just released a The Gan 1 class D amp that has NO FEEDBACK....no op amps......it is pure digital. Takes PCM via coax only and converts it to PWM in software and uses GAN output stage. NO feedback. This will not have a low of impedance as some of the above and also the distortion figures will be worse than above (Kuribo will freak out at this). However, the sound is said to be really great. You need a source that has some kind of digital volume control at 32 bits or more so you won’t mess up the sound. This thing requires no DAC, no preamp....no cables between DAC and Preamp and amp.....This is exactly what the Technics amps do and also the Lyndorf amps do. There is only a few delivered so comparisons to any serious DAC/Preamp/amp combos have not been made.....but I always like a short signal path.....let’s see what this $2000 amp that needs no DAC or Preamp can do.

Here is a real sleeper....and maybe a super amp?:

Peachtree has just released a The Gan 1 class D amp that has NO FEEDBACK....no op amps......it is pure digital. Takes PCM via coax only and converts it to PWM in software and uses GAN output stage. NO feedback.

• @ricevs
• Thanks for sharing this.
• Now this would be a fascinating contrast comparison with the Atma-Sphere amplifiers. Vastly different design and execution entirely.
  
  No feedback vs high feedback.
• No Op-amp vs Op-amp implementation. My oh my, quite a compelling listening experience this could be.
•  
• I wasn’t aware that class D amplification was doable without the utilization of negative feedback
• Charles

@charles1dad

Well I have had the peachtrees in my system. They are at best mediocre. They don’t compare to the Atma-Sphere. The have a clinical, dry lifeless sonic character. Soundstage and depth isn’t there either. And the don’t have the sort of realism the Atma-Sphere has. The Atma-Sphere is true to instruments. A piano sound as a piano should. As well as Sax, drum beats, brushes and cymbals. I have also had some of the other amps he lists in my system. As to date the Atma-Sphere Class D beats them all. And not by a small margin. And is the only Class D I have like within my system. And I really like them. Recivs is just trolling here and trying to derail the thread. And I doubt he has heard any of the Amps he lists. And I know he’s never heard the Atma-Sphere. So not sure how one can review an amp that they’ve never heard before.