On 17/01/2017 13:11, Dave Plowman (News) wrote:

Also, it was never simple making a good sounding RIAA preamp. Let alone
one which does that for a USB input.


It doesn't need to though.
You just post process the digital to correct it.
As long as the DtoA is good enough it will be better than preamp
equalization (for some value of better).