DENAFRIPS Terminator and Schiit Yggdrasil Evaluation and Comparison


The Evaluation and Comparison of my Denafrips Terminator and Schiit Yggdrasil DACs is posted in full, here:

http://terminatorandyggdrasil.blogspot.com/

Main body of my 'review' is copied and posted below.

For details on my Methodology, System and Room Information, and Music Selection please go to the second section (similarly titled) after opening the link.
david_ten

Showing 3 responses by shadorne

I don’t doubt the Denafrips sounds fantastic. However technically I have a bit of trouble with the outlandish claim of 26 bits resolution. I smell a rat that may have been released by the Denafrips marketing department. (Not unlike Yggdrasil which have dubious technical claims also - usual audiophile marketing hyperbole as some would regard this)

26 bit capability requires precision of 1 in 67 million. This resolution requires a tolerance of 0.0000015%on the resistors.

The designers claim they actually use 0.005% tolerance resistors which is technically between 14 and 15 bits resolution.

The only thing that could solve this fact of physics or mathematics is if the designer is using a very large number of resistors and randomizes the selection every clock cycle. In theory you get a reduction in noise by the square root of the number of resistors.

Applying mathematics again, to get to 0.0000015% accuracy (26 bit resolution) from 0.005% tolerance on an individual resistor would require 11 million resistors.

Can anyone with more technical knowledge about the Denafrips Terminator design confirm if they are randomizing more than 11 million resistors to create an output per individual channel? Overall the design should have at least 22 million R-2R resistors for two channels in order to meet the stated resolution of 26 bits - can anyone confirm this is what they have done?




Great to see my online stalker is still following and as usual has nothing constructive or useful to add.

Anyway I should also thank the OP for a great review and that my query above is genuine and not malicious, you see this design is very much like the latest ESS Sabre chip - thousands of 1 bit delta sigma converters as in the new ESS chip is little different than thousands of R and 2R resistors in the Denafrips DAC...a similar approach perhaps?
@reggy 

The Yggdrasil has dubious claims also but that like the denafrips it doesnt mean that they won’t still sound good. Personally I don’t trust or like BS claims however any resolution above 20 bits is unlikely to be noticeable on most music. 

My issue with dubious claims is that it creates doubt about other engineering aspects of the device. Presumably, if they are willing to BS about some aspects then what else might be fudged?