Question on DACs...........

I am using a Cambridge Azur 840c CD player and may upgrade one of my amps (a Naim Nait 5 i) to the Supernait which has a DAC onboard. Do any of you know which might be the best route to go - bypassing the DAC in the Cambridge and using the one in the Supernait or simply using the one in the Cambridge as this player, while not expensive has a great reputation. That is using the DAC in a $1,500 piece of gear or the one in a $5000 piece.

Apparently there isn't a lot of difference between the 5i and the Supernait, the DAC being the big difference and if the DAC in the Supernait turns out to be much superior then I will upgrade.

Thanks a lot.

Thanks