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Schiit Yggdrasil -- 21 bit?

Schiit says that Yggdrasil is a 21 bit DAC. But the DAC chips that they put in the device ( Analog Devices AD5791BRUZ, 2 per channel) are 20 bit with the error of plus-minus 0.5 LSB.

How can the DAC be 21 bit if the chips are 20 bit? Using two chips per channel does reduce the RMS voltage of the noise by  a square root of 2. But how can you get to 21 bit from there?

Can someone please explain.
defiantboomerang
falconquest's avatar
falconquest
1,108 posts
 
udishamir,
I would like to hear more about your impressions of the Soekris dac1541. Would you mind sharing?
udishamir
9 posts
 
Sure,

Its a very interesting DAC, its form factor is really appealing, its compact with an excellent sound quality. I must admit that before attaching it to the Lynx AES16e sound card (was using direct USB connection) it was OK, didn't "blow me away" (also leaving it working for few days does the trick). 

When connected with the Lynx sound card, then everything "opens up" started to hear new elements (especially in electronic music, soundtracks).

Soekris is a Danish company, i got the DAC two days after i ordered it (i live in California), They are very responsive.

My previous DAC was the Marantz HD-DAC1 which is a Delta Sigma, great sound for its price but beyond compare to the Soeakris or ofc the Yggdrasil which is a Monster, seriously. 

The Soekris is cheaper then the Yggdrasil and give it a fight :)

I personally recommend !

bellow is the dac1541 spec: 
http://www.soekris.dk/dac1541.html

Hope that helps.



falconquest's avatar
falconquest
1,108 posts
 
It does. I researched them for a while but since it is new in the marketplace there were obviously no reviews. I ended up going with the Holo Audio Spring Dac but couldn't help but think for the money the Soekris represents a great value. Hope you enjoy it!
udishamir
9 posts
 
I do, love it.

While i tend to switch between the Soekris and the Yggdrasil constantly (depends on the style). Im waiting for the Spring DAC :)
gdhal's avatar
gdhal
1,641 posts
 
Interesting in that Soekris states

 "It have the fantastic clean and natural sound of a 27 bit R-2R sign magnitude DAC..."

whereas Schitt states

"If your 24 bit recordings actually have 24 bits of resolution, we’ll eat a hat. And those "32-bit" DACs? Well, they have this measurement known as “equivalent number of bits.” This means, in English, how many bits of resolution they really have. And that number is 19.5. And 21 is better than 19.5, in all the math books we know."
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