DACs that upsample to DSD internally?

I think you mean the DAC is a Delta-Sigma, which some mistake for DSD.  DSD is encoded using Delta-Sigma.

https://en.wikipedia.org/wiki/Delta-sigma_modulation

DAC's are either multi-bit or delta-sigma, although I think there's some hybrids with 2 bits, and I think the famous dCS ring DAC was  complicated 5 bit Delta-Sigma, but now I may be making stuff up. Schiit makes a big deal of using multi-bit DAC's.

99% of current DAC chips are Delta-Sigma types.

A common feature is "Asynchronous Sample Rate Conversion" though it may be called "reclocking" or upsampling or something. ASRC can go up, or down or even keep the sample rate the same, but with a new low jitter clock.

Best,


ERik

Eric, he was asking for the DAC that converts PCM to DSD. Every Delta-Sigma D/A converter does that, unless he is looking for the DAC that brings DSD stream to the output connector.

Delta- Sigma might be oversampling but it is not Asynchronous Sample Rate Converter.  ASRC is usually a separate chip that is in front of Delta-Sigma DAC.

@kijanki

I sit corrected! I thought by now there were a few DAC chips with this ASRC built in, but after browsing it seems I was confused.  Perhaps this was an outboard filter chip with ASRC built in. My mistake.

Best,


Erik