GaN amplifier from GaN themselves limited supply!!!

WOW!!!!
Didn’t take long, for the two that have the most to loose with their Class-D offering, to start rubbishing this GaN amplifier, as they do in other threads too.
But they are so far out, they are in another universe.


This is for others that are interested in this GaN by GaN amp

Here is a test/measurement made by Amirm of Audio Science Review, one of the most highly respected sites for the truth on anything audio related.

This GaN amp complete was loaned to them by an owner for test/measurement and "it had it’s variable feedback set at low" because the owner had it that way, trouble is a couple of measurements won’t be as good as they could have been Amrim says that in the tests.

"Performance here is above average compared to median of all amps I have tested (which lands around 78 dB SINAD). But it not stellar. Speaking with the designer, his focus was to keep the level of feedback low to show the advantage of the GaN transistors not needing much. He was not aiming to produce the best performance possible. Personally I wish he had targeted that given that is what we like to see here.
All in all it was superb in tests and measurements all aspects that matter."

As for heat there’s virtually none.

" Again, no heatsink due to high efficiency.s for heat sinking it runs so cool there’s no need for it. Practical MOSFETs take time to switch and during that time, they generate losses in the form of heat and limit how fast you can switch them. GaN transistors aim to solve this problem as these few slides from GaN systems show:"

Distortion at high power for a Class-D is incredible

"We see that the distortion is still under control instead of shooting through the roof.!!"

"I don’t think I have ever tested a switching amplifier with this level of frequency independence. Even Class AB linear amps struggle to produce such an absolutely clean response. Amplifiers with high amount of feedback run out of gain at higher frequencies and hence distort more. Not this design."

Even techs with follow up comments on the thread were very impressed.
https://www.audiosciencereview.com/forum/index.php?threads/gan-systems-amplifier-eval-board-measurem...

As for me getting one, all here know I only have Class-D preference for one, the Panasonic SE-R1 with it’s 1.5mhz switching frequency, even this GaN by GaN I started here, won’t shift my liner amps, yet!!

Cheers George

Ummm someone’s not impressed.😴

It would help if more information was available. One thing seems apparent: While it might make 200 watts into 8 ohms it will not be able to do that for any length of time as there appears to be no provision for a heatsink (although it may be possible to heatsink it). Without a heatsink at 200 watts the output devices will simply overheat and fail- probably within a few seconds but maybe a minute or two.


IOW this kit really is for evaluation and for that I'm sure its just fine. But if I were to be building up a class D amp from parts I bought on the web and that amp were for personal use as a nice stereo this is not what I would get. One important thing missing is a bit of information about how the amp works. Is it zero feedback? Self oscillating? Stuff like that can have a huge effect on how it performs and sounds!

Surely the name evaluation board tells you something about the intent and the purpose.

It's not being sold as a kit to which you only need to add a case.

All eval boards are created by engineers to show off their parts......"OH look, they work". They are not designed by people who have spent hundreds of hours designing, listening and redesigning till it sounds great. GaN Systems is not a bunch or tweaky audiophiles.

We are all serving each other. We are each others brother. I share what I do because you and I are one. I am talking to myself. We are all....always talking to ourself. So, as your brother and your Mother I want you to be happy. So, I recommend things that I think will make you happy. Most people who talk to me directly do not do any business with me because I direct them to another service/product that would best fit them. My goal is perfect worship.....perfect service.....perfect love....perfect joy and perfect peace. What is your goal?

Then why are you here trying to derail this thread???🤦‍♂️🤦‍♂️🤦‍♂️



That's funny

I have absolutely no interest in those boards......even if they were free.

Then why are you here trying to derail this thread???🤦‍♂️🤦‍♂️🤦‍♂️

This is the second time this feature packed GaN Evaluation board has really got under your skin.
A little strange for this kind of reaction, I believe you’ve just shown your colours.
As it seems the way your going on in this way, that it’s detrimental or in direct opposition to what your attempting to do with members here with other Class-D modules, as you can only get one these, and no more, so it’s of no use to you.

And for everyone’s else’s information, it’s a USA based Company, and nothing to do with China at all.
GaN Systems Corp.
2723 South State Street, Suite 150, Ann Arbor, MI. USA
48104 T +1 248-609-7643.

Cheers George

Come on George.....just buy the dang thing instead of posting about it.

Actually, I am sure it is good......but very good....I doubt it. Come on people, get your eval board right here. Maybe you can make it work. Maybe you will not lose a lot of money. Really great resale value.....not. There will be assembled GaN integrated amps within a few years for under $500 and boards from China for even less.....don’t waste your money on this eval board. The only reason you don’t see the market flooded with GaN amps is that they have to be designed from the ground up. However, once there are a lot of designs floating around.....well, you know the Chinese.....they can clone things faster than frying a pancake. Get ready for GaNoramma....coming to your internet near you soon.

George, you have shown several boards over the past few years and you know it.  I have absolutely no interest in those boards......even if they were free.  

Class “D”ull. 

Ummm someone’s not impressed.😴

(single purchase only, not available for multi purchase for commercial Class-D manufactures)

Maybe this is why 

And btw this is the only Evaluation board I have ever shown.😎

Yes, and it could be just meh......and a lot of money and time spent.  Why don't you buy it George and assemble it and compare it to your class A super amps and let us know if we should get one?  You seem to be in love with eval boards.....you are always showing them. 

arch2

They’re not parts Arch, but the complete made up item without box.
It’s easy as abc to abc arch, if you can put a system together, you could do this, if you took time look at the data sheet over a few times while doing it, everything would sink in.
And don’t forget, if something puzzles you, we all here have access to the data sheet to help out, and you "could" end up with one helluva GaN Class-D Integrated with dac. for $1.3k

It’s all here iec AC to the power supply, +- power supply connector to the Class-D board, I drew in the input rca’s and speaker terminals https://ibb.co/bHjMpSs the rest is just mounting screws a box and speaker terminals.

Cheers George

I really admire you guys who can buy parts and turn them into working audio components. My electrical knowledge consists of thinking it’s all created by elfin magic.

wow !

This looks the goods, and easy as pie to get going.Could be the new must-have of GaN Class-D’s, especially at that price …

Cheers

Scottt