CLASS D MONO AMPS buy ATMASPHERE MUSIC SYSTEMS

Yes, I long for a $3000 a pair amp that sounds as good. If Ralph’s amps were made by Kinki Studio they would be around $2500 the pair. Check out:

https://www.kinki-studio.com/ex-b7

The Kinki Studio amps are $3500 a pair and sound really good, twice as heavy, twice as powerful, way more parts and great build. Srajen, at 6 moons, uses these as his reference.....2 meg bandwidth.

Maybe when Ralph retires he can make a deal with Kinki or someone and have them cranked out in China....then more of us could enjoy this quality of sound. $5400 is nothing for some but for most audiophiles....still a lot of money. I’ve never bought anything that expensive.

In the meantime you have modded Purifi based amps, and stock or modded GaN amps from Orchard, LSA and Peachtree that are really great.....all way cheaper.

If these amps are better than much more expensive amps....then this is really good. However, a more powerful version has to be in the wings.....100 watts is just not enough for some speaker systems. I would go at least 300/600/1000 watts......of course, even more money ($10K?)......but, again, if they beat the big boys than great.

Every single person (including me) is necessary in this universe. No one needs to go away. If you do not like what I say.......remember.....when you point a finger at someone.....3 are pointing back at you.....it is all projection. What I try to project is love and respect towards everyone.....because I know that everyone is divine....worthy and deserving.

I doubt anyone would send me a $5400 amp to mod.....but I am open to it. Everything can be improved.

By the way, the Mytek Gan amps are still delayed....they have a 200 watt a channel $6K amp that may come out soon......so more things to try. It never ends.

I hope Ralph can crank out these babies soon so a lot of people can get great sound for not a fortune. Blessings to all.  Peace on Earth and especially in your heart.  Love is what we all came here for.  You create it anytime you like....you are in control.

200 watts into 4 will not drive Apogee speakers, Magnepans to great volume, various Wilson, etc. speakers.  There are no ohm taps on a transistor amp.  The output impedance on Ralphs amp is low......but the voltage/current it limited.  Works the same on class d and class A or A/B.  Purifi has a new module about to be released that has 40 amps of current instead of the 26 for its current model.  This will make it double from 250 watts at 8 ohm to 500 at 4 ohm and even puts out 900 watts into 2 ohms......now that will drive more speakers, for sure.  I am sure Ralph will do something similar.  Myself.....100 watts is plenty.  But I have easy to drive speakers.

All the specs he wants to share now are on his website. He has never published measurment graphs......most companies don’t. If you want more detailed specs than I suggest you contact him directly.

http://www.atma-sphere.com/en/classD.html

Don’t think so. His market is for people who REALLY listen and value how an amp SOUNDS and value his take on harmonic structure of the distortion versus super low standard measurements of distortion. All versions of Purifi and Hypex sound different from each other yet most measure the same. I have no doubt his amp will "sound better" than anyones Purifi....including my modded ones....of course, at a different price point. Some believe the measurements at ASR really mean something.....they do mean something....just not much in the way of how something sounds. Those guys do not listen so they have no idea if their measurements correlate to sound. Ralph has made state of the art tranformerless tube amps for years and his amps have been compared to other amps over and over....so he has a great reference for sound. ASR guys have no reference for sound....they just have some measuring tools.  I am pretty sure Ralph won't send his amps to ASR to be measured.  Maybe in a few years someone will send them their own pair and then you can whine about the fact that it does not measure as good in some ways as something.else.  Meanwhile, those that have the amps will be grinning because of the beautiful sounds it makes.

We all have different takes on things....vive la differance. Joy to you and everyone.

Here are the facts that Kuribo/ASR miss.

1. No amp has ever passed straight wire bypass testing.

2. All Purifi amps sound different.....based on their input stages, power supplies, wires used, connectors used, damping ,etc. etc.........yet, they will all measure about the same.....with all these different parts and execution.  So, if you can change and improve the sound of an amp without affecting its distortion measurements.....this actually proves that measurements by themselves are really not that important to really KNOWING what an amp sounds like.

3. No one who has listened to a bunch of serious amps has ever declared a Purifi based amp is the best amp in the world.

4. The Benchmark amp also measures like ASR people want.  It has its own sound (improved by using audiophile fuse in it) and again, no one would say it is state of the art that has listened to many high priced serious amps.  On Jay's thread right now there is a guy who just listened to 4 different amps and the Benchmark was not the best.

5. Discrete op amps do not generally measure quite as good as integrated circuit op amps.  VTV sells a version of their Purifi based amp that you can interchange various op amps on its input....including integrated circuit ones.  The discrete ones just plain sound better and each brand of discrete op amp sounds different from every other one.

6. Static standard distortion measurements do NOT tell you how transparent (like a striaght wire with gain) an amp is.  This fact alone does not resonate with measurement obsessed people.  The only way to know how transparent an amp is......is to listen to it.  Listening rules....measurements are just a mild indicator of something....nothing else.

Here is another factoid.  You cannot change anyones addiction by stating truth.  In order to stop your addiction, you have to admit you are addicted......the ego does not like to be WRONG.  I am sure Kuribo will fire back with his usual response.  We have played this game before.

The dance of truth versus ignorance is an eternal dance.  On every level there is truth......and on some level eveything is true.  So, hopefully, we can speak our truth in peace without making someone else wrong.  People are beautiful.....but sometimes we think and act out of alignment with our beauty.  This is called "being human"......However, we are also divine and can re-align with our beauty at any moment......we make the call.....every breath we take can be filled with joy or whatever else you choose.....choose wisely my friends.

The mind is a "make wrong machine"........the heart is a "make beautiful kissy thang"

I send you all big wet kisses.

I guess Kuribo will have no more to say on this thread because this design is not as good as Purifi (according to him).....so

Now we can get back to the actual reality of .....How does it sound? Will be interesting to get the feedback from more listeners when these amps are produced in more quantity and compared to other amps besides older OTLs. So far, we have two raves. Enjoying the ride....I hope you are too!

There are two "speed issues". One is the switching frequency (400K to 1.5Meg) and the other is the speed of the output device. GaN transistors are faster and have less overshoot and ringing than mosfets so therefore have less intrinsic dead time. Which of these to "speeds" make a sonic difference? Some people claim both do....some claim only one does....some claim that 500K mosfet switching is fine. If you could take an amp with mosfets and change it to GaNs and listen without changing anything then you might know about the intrinsic speed. If you take an amp and raise its switching frequency without changing anything else then you might know about that. If these sonic tests are not done then you are just guessing..