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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
defiantboomerang OP
141 posts
 
@gdhal 

Because DAC3 is the pinnacle of technology at the moment. If it gives you satisfaction to use/own technologically advanced and superbly engineered devices, then DAC3 is your thing. If you don't care about specs and technology, then your choices might differ.
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jond's avatar
jond
5,775 posts
 
+1 to Dave and defiantboomerang seems more and more like a troll each passing day.
gdhal's avatar
gdhal
1,641 posts
 
Well, I too would have to believe there is more to why someone would purchase a DAC 3 over a Oppo if sound were the primary consideration. 
udishamir
9 posts
 
Im using both the Yggdrasil and the Soekris dac1541 which is true R2R.
The Yggdrasil soundstage is phenomenal, i do however notice that mainly in electronic music the Soekris sound is more crispy and enjoyable. 



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