PS Audio Digitalink III Cullen replacement


Has anyone compared the (old) PS Audio Digitalink III Cullen modification DAC, with a more recent and above all definetely better sounding DAC, at an european second hand price of around 600/700 euros? The change, of course.  has to be worth the price and viceversa. Thanks. Maurizio
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Personally I never had Cullen replacement of my PS Audio DAC
except for replacing the fuse,and updating the power cable
to a Pangea AC XL14 I also use iFi Audio iPurifier3 for USB
and iPurifier SPDIF coax.
it made some improvements.
im in process of purchasing a DAC the Schiit Gungnir Multibit.