Bruno Putzeys said:
The UcD amps are quite insensitive to HF noise. You can use them as post filter for a deltasigma DAC chip (ie. skip the usual op-amp based filter).
At first I want to said The BIG THANKS to the Bruno for his increadible Ucd amps.
I wonder by the possible expluatation of UcD as a post-filter for the D/S DAC (SM5872BS in Marantz CD63mkII) but avoiding some problem with unstability of UcD.
8xfs oversamling (8x DF included in the DAC chip) is 352.8kHz which is near the workin' frequency of UcD (400 kHz as I knew)
Is there any problems out there?