Evening all
I’ve just acquired a Roksan Attessa CD transport to use with my Superuniti.
Works fine except that I get the message “Cannot reclock audio” (a message which I didn’t receive when using it with another transport).
I’m wondering whether anyone knows if this indicates some sort of error, or if in fact it doesn’t really matter? I am close to knowledge-less when it comes to the technical workings of DACs.
Not familiar with the superuniti… but it sounds like the click rate from your Roksan transport is too off spec for the Superuniti to accurately reclock.
If you can hear audio, it might be the SuperUniti is aligning with the transport as best it can, but not using one of its precision clock settings.
So if you can hear audio, it will be ok, just potentially not working as best it can with the DAC in the SuperUniti.
Thank you
Is “reclocking” a fundamental feature of a DAC working optimally? In other words, is it necessarily sub-optimal that the DAC is using something else’s clock rate? If so then I expect I should replace the Roksan
Yes, DACs create their own stable clocks independent of the source data. This is done to minimise resultant sample jitter and remove certain dependencies from the sources.
Most DACs will align their specific clocks to match the source data rate. However if the two differ by more than a certain amount then many DACs including most if not all Naim DACs, will try and match the source clock, but do it dynamically instead of using one of its super stable clocks. The result is there may be more digital sample jitter in the DAC reconstructed audio. This should be minimally noticeable if noticeable at all for many…
Should you replace the Roksan… i can’t comment, but depending on how you bought it, it is worth having it checked, it might have moved out of spec.
thank you Simon really appreciate it