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NAD partners with Purifi, working on an Eigentakt amplifier

GrimSurfer

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GrimSurfer

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maty

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Thanks to Google Images: https://www.google.com/search?q=Hypex+NC1200+Quality+implementations

Nord Purifi 1ET400A Amplifier Module

Nord-Purifi-1ET400A-Amplifier-Module.jpg
 

Matias

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Mike @ Mivera has better pictures. He is preparing quite an interesting all-in-one streamer-DAC-amplifier by the way.

This is the sample that Purifi has sent for testing and reviewing (6moons). 2 amplifier modules connected to an input-buffer-output board, with on/off switch to enable the buffer gain.

a27d24_0c051eb572934d4cb10072ab4659edc5_mv2_d_1920_1440_s_2.jpeg


a27d24_81b7c5909bf14381aa9751f16c0215e9_mv2_d_1920_1440_s_2.jpeg


a27d24_937320edc1c349369712e090a09ed7d1_mv2_d_1920_1440_s_2.jpeg


And put inside a chassis with 1 Hypex SMPS1200 power supply.

10.jpg
 
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maty

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maty

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https://www.miveraaudio.com/forum/main/comment/5d09e8d47668730061a7b5b2

[ The Purifi input board buffer uses TI OPA1612 opamps. If you have a look at the datasheet, based on the information they provide, the objective performance is outstanding:

http://www.ti.com/lit/ds/symlink/opa1612.pdf

TI made a newer version of this opamp, with higher current output called the OPA1622:

https://www.audioxpress.com/news/Te...eneration-OPA1612-Audio-Operational-Amplifier

And after that they released an enhanced version with built in thin film resistors, and EMI suppression provisions, that is actually capable of delivering better real world performance in a final implementation. The data sheet specs are not as good, but due to the internal laser trimmed resistors, and EMI provisions, real world performance should be better:

http://www.ti.com/lit/ds/symlink/ina1620.pdf ]
 

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amirm

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FYI, the kind folks at Purifi contacted me a while back about me testing the unit. As it turns out, I just received email from them that my sample has shipped!
 

maty

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Now that nobody reads us, I confess that of all the known class-D, 1ET400 module is the only one that really catches my attention today. No Hypex, ICEPower.... This one I would like to hear after building it.

BTW: only two companies have answered for now the request to send you Hypex NC1200 amps.
 

maty

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I have not heard of that module. Tell us more.

Me neither. What I have read has convinced me. I am sure the measurements will be very good. It is about to see how he would behave with my favorite musics: acoustic instrumentation and voices without computer processing, from old analog masters mainly.

Or DSD recordings without processing in the studio, but there are very few.

The sound will be spectacular with those recordings but will it convey emotion? That is the million dollar question.
 

maty

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I am sorry, you talk about Hypex NC1200. I send you the e-mails.
 

Matias

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I have not heard of that module. Tell us more.
It is the next generation of class D modules from Bruno, the designer of nCore, and his partner aka "bromace" Lars, as the interview says. :)
As for tech specs, their excellent measurements can be seen in the PDF attached. Subjectively it is also said to be an improvement on nCore.
 

Attachments

  • 1ET400A - Product Brief (1.01).pdf
    1.3 MB · Views: 410

Purité Audio

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Matias

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amirm

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It is the next generation of class D modules from Bruno, the designer of nCore, and his partner aka "bromace" Lars, as the interview says. :)
Oh, I know about that of course. Just was not familiar with the model number yet. :) As I noted, one is coming for testing to me. I have the spec and user manual that they sent me.
 

maty

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For years I have thought the box for a DIY amplifier. Only it needs to change the dimensions to the CNC project. Maty Edition (ME). Built to order (EU), cheaper and better than those that sell out there.
 
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