Article: New Linn Klimax DSM With Organik DAC

[ecwl]

Very interesting. Organik DAC looks like a 32-element DSD/SDM DAC with shift register based on the video. But of course, the devil is in the details like the over/upsampling and noise shaping algorithm, the oversampling rate (DSD128/256/512/1028?), implementation of the SDM DAC, etc. Also extremely cool how they’re going to put the DAC into their active speakers, absolutely crazy.

 

And OMG the case work looks amazing. 

[ecwl]

Just re-looked at the Organik DAC video again.

I wonder more and more if it actually resembles more to Mola Mola Tambaqui DAC architecture. 

https://www.hifinews.com/content/mola-mola-tambaqui-network-attached-dacstreamer-feel-pulse

Because you can think of the Mola Mola as a 5-bit 3MHz DAC or a 1-bit 100MHz DSD/SDM DAC with 32-element and shift register.

While the design is still not as sophisticated (or complicated) as the Chord Pulse Array DAC design, this approach should still significantly reduce jitter sensitivity at the actual DAC level although it would still be susceptible to noise floor modulation depending on the noise shaper.

[ecwl]

43 minutes ago, The Computer Audiophile said:

Similar to the DSC1

 

https://www.signalyst.com/hardware.html

Yes, from a pure DAC architecture standpoint but at least according to my limited understanding...

I think if you run HQPlayer and feed it into DSC1, it can feed DSC1 any signals of 0’s and 1’s alternating. Mostly because HQPlayer can modulate the oversampled DSD signal based on the noise shaper, but also that HQPlayer has no idea whether the DSD DAC it’s feeding into is a 64-element, 32-element or 1-element DSD DAC or whether it uses shift register as an architecture.

 

But Mola Mola DAC would only feed PWM signals from 0-32 to the DAC meaning that you’ll only get 

00000000000000000000000000000000

00000000000000000000000000000001

00000000000000000000000000000011

00000000000000000000000000000111

00000000000000000000000000001111

00000000000000000000000000011111

etc. Until 

01111111111111111111111111111111

11111111111111111111111111111111

And when you feed that into the shift register, whenever the DAC is maintains the same signal, say 5, your DAC is would be constantly switching and the advantage is that there is 1 element that’s going from 0 to 1 while another element is going from 1 to 0 and so that balances the DAC elements out and produces constant amounts of noise. 

And that’s what you can see from the Organik DAC images of the 32 elements:

00000000000000000000000000011111

00000000000000000000000000111110

00000000000000000000000001111100

00000000000000000000000011111000

00000000000000000000000111110000

Etc. Until

01111100000000000000000000000000

11111000000000000000000000000000

 

The difference between Chord DACs and Mola Mola is that Mola Mola can still switch from say 5 to 15 then back to 5 in the next sequence and jumping like that would force 10 elements to go switch from 0 to 1 in succession and then later from 1 to 0 in succession 10 times and that would still generate small signal linearity issues and noise floor modulation, albeit significantly less than other DAC architectures or HQPlayers feeding the same DAC architecture.

 

Whereas Chord DAC noise shapers would only go gradually from 5 to 6 to 7 to eventually to 15 if needed so that you’re at most having 1-element imbalance in the switching, thus significantly reducing small signal linearity issues and noise floor modulation. At least this is what I can gather from Rob Watts the designer of Chord DACs and the videos Chord posted.