Not a chance. I've owned both and the 303 is IMHO in a different league. Due to the versatility of the DAC, however, you have to experiment a bit to figure out which configuration you prefer - and it may be that you end up switching depending on the recording, other components in the system, etc. That is not everyone's cup of tea. In all, however, I'd be very surprised if you didn't prefer the Cary.
good luck
Marty
good luck
Marty