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GaN-based Class D power amps

The use of GaN-based power transistor tech is now emerging for Class D audio power amplifiers. Seems appropriate to devote a forum thread to this topic. At least 3 companies have commercial class D amps in their books:

Merrill Audio, with their model Element 118 ($36k per monoblock, 400 W into 8 ohms, 800W into 4 ohms), Element 116 ($22k per monoblock, 300 W into 8 ohms, 600W into 4 ohms) and Element 114 (coming soon). 
https://merrillaudio.net

Review of Element 118 at this link:
http://www.enjoythemusic.com/superioraudio/equipment/1018/Merrill_Audio_Element_118_Monoblock_Amplif...

ADG Productions, with their Vivace Class D amp ($15k per monoblock pair, 100W into 4 ohms). (The designer emailed me indicating he has another product in the pipeline.)
http://agdproduction.com
Review of the Vivace Class D moniblocks at this link (warning: link might not work (1/11/2019)):
https://positive-feedback.com/reviews/hardware-reviews/agd-production-vivace-gantube-monoblock-ampli...

Technics SE-R1 Class D stereo amp ($17k per stereo amp, 150WPC into 8 ohms, 300WPC into 4 ohms) 
https://www.technics.com/us/products/r1/se-r1.html
Preliminary review of the Technics SE-R1 at this link:
https://www.stereophile.com/content/technics-se-r1-digital-amplifier
Technics also has a lower priced GaN-based class D integrated amp in their catalog:
https://www.technics.com/us/products/grand-class/stereo-integrated-amplifier-su-g700.html

Anyone listened to or own any of these amps?


celander
celander's avatar
celander OP
1,036 posts
 
☝🏻Done.

https://forum.audiogon.com/discussions/gan-based-class-d-power-amps-corrected-op

This thread will remain—at least I will not be the one to remove it.
georgehifi's avatar
georgehifi
4,966 posts
 
This is ridiculous, just put up a post here to correct what you need to do, this thread is already entrenched, all your going to achieve is a mess! (delete the new thread) your making my head spin
https://i.pinimg.com/originals/11/a5/e8/11a5e81b7fd36e47ac16dee0ecf0e1f8.png

Cheers George
celander's avatar
celander OP
1,036 posts
 
I already posted the various corrections. The fact you missed them shows the new OP is warranted.
georgehifi's avatar
georgehifi
4,966 posts
 
I’ll just stay here, all info links ect ect ect are here already. I don’t think anyone will want to post everything they said here, again over there.

Cheers George
georgehifi's avatar
georgehifi
4,966 posts
 

Here is a EPC GaN chart showing all the different GaN fets, the ones in the 200w eGaNAMP2016 GaN Evaluation amp EPC2016C, judging by this chart are capable of capable 36A each with a rail of 100v.
Then I hope this is right, think you’ve got the EPC2033 which has higher 150v but it can do a whopping 48A each!!!! And the EPC2022 and EPC2021 at 90A????
https://epc-co.com/epc/Portals/0/epc/documents/briefs/ab003%20egan%20fets%20for%20class-d%20audio.pd...

Cheers George
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