"I am considering changing dacs. I have a Black Ice Audio DSD dac that like all Chinese made products I have tried has had problems."
As long as you're still open to try things MIC, Denafrips Ares used
https://www.audiogon.com/listings/lisaci60-denafrips-ares-ii-da-converters
excellent for an idea of R2R presentation. There are a couple of MIC tube dacs in the price range if you search.
As long as you're still open to try things MIC, Denafrips Ares used
https://www.audiogon.com/listings/lisaci60-denafrips-ares-ii-da-converters
excellent for an idea of R2R presentation. There are a couple of MIC tube dacs in the price range if you search.