- The Vega DAC seems to handle 24/176.4, DSD64, or DSD128 better than 24/44.1, at least to my ears. But even then, it was too close to say anything for certain. DSD and PCM differences if there are any, are just too small. DAC differences, while subtle, are still much easier for me to distinguish.
Good stuff, Marv, what filter mode did you use?
For scientific purposes like this should have been 1, it's the flattest, and the same for all sample rates, the others have more treble attenuation effect at 44.1K, that can probably explain .
Also in DSD filters just cut off ultrasonics, so the effect is completely different than PCM filters.
I honestly did not hear any difference comparing DXD with DSD sample downloads from 2NL, but classical is not the best material for this task.
What I've found interesting in particular that your tests showed 44.1 upsampled to DSD sound same as PCM 176.4.
And speaking of filters, for PCM and for good recordings I think Mode 2 is the best, it's like slightly sweetened Mode 1, still relatively flat but with very little treble roll-off.
BTW, did you find upsampled in software material sounding in general better with Vega, I think by the way filters are designed that should be the case, haven't played with that myself, yet.