Delta Sigma DACs

Then why do R2R DACs sound better than Delta Sigma?

In fairness, better or worse sounding is somewhat subjective and at the discretion of the ear of the listener.

That said, and based on the relatively few delta-sigma and multibit DACs I’ve heard, I prefer multibit as it is more authentic and not as digital sounding to my ears.

Cheeg, Yes, it can play SACD but it cannot output it other than analog.

R2R's don't sound better than delta sigma's. Maybe the MSB, but I never had that in house. I have not found an R2R yet that can beat my delta sigma.

Can a Delta-Sigma DAC translate both DSD and PCM streams to analog?

The answer is definitely YES.

I would view with appropriate suspicion the views of those who assert that modern delta sigma chips are inherently inferior, even as applied to PCM. First, IMO you must completely discount the views of a manufacturer (like Mojo Music) who markets a unit using a different kind of chip.

Delta sigma chips have become a target for condemnation because they are ubiquitous. Consider the ESS9038pro Sabre. It’s relatively inexpensive because it is produced in great quantity. It probably has more R&D behind it than any other chip by far. Because it is relatively less expensive its implementation in consumer devices varies from very simple (and cheap) to superb.(and expensive). But they all can tout they use an industry-leading DAC chip.

Bottom line is that some of the best sounding and best reviewed devices use the ESS chip. Many other devices using other chips and technologies are also great sounding and well reviewed. There are those who speak of a sound signature of particular chips. IMO the sound of a modern well designed unit should be of the software and not of the chip. In well designed units that’s what i expect to hear, the particular chip notwithstanding.

The fact that D/A converter is Delta Sigma does not make it DSD capable - ESS9038pro has interface for DSD but Wolfson  WM8740 doesn't.