Originally Posted by T.R.A.N.C.E.
Do you realise that most modern desktop DACs under 3 grand use digital volume??? Digital volume was only an issue in the days of old where dacs where 16 or 24bit. If NAD, Audiolab and Cambrige etc etc are all using digital dac level volume in their high end dacs then it obviously can't be impacting the sound as much as you think. ESS and NAD claim that at 32bits, digital volume is no longer audibly degrading sound. So relax, iBasso did fine... You are correct in saying that on a technical level digital volume is degrading sound, but the highly debatable part would be if it would even be audible on a dual 32bit dac like dx90.
My view was on "DAC chip level" digital volumne control. Which is different from the "Digital Volume Control" at later stage of the circuit.
The problem I was talking was on S/N, not the 16/32 bit accuracy issue you are saying.
As long as you are using the DAC at max volume (as most people do), it doesn't matter as you are at the max S/N setting.