Thanks for your suggestions.
I can see the thinking behind the idea of repIacing the current streamer and cd player with the N01XD but I have a fair few cds and I'm not quite ready to abandon the possibility of playing discs altogether.
I'm not sure how transparent my current system is. It's certainly the best system I've ever had. At the moment I've got a Bryston 4B3 amp and a BP26 pre, PMC fact 12 speakers supplemented by 2 Velodyne DD10s. I'm considering replacing the amps with a Gryphon Diabolo. Once the 333 is out and about it would be worth listening to.
I will peruse the Audioshark forum, thanks for that.
I hope my local dealer here in the UK will be able to get hold of a K01XD to try it out at home. I thought it would be a good idea before doing so to draw on the knowledge in this forum.
I like the N03T streamer very much; I see both Esoteric devices more or less as one machine. It is a huge improvement over just plugging the Roon NUC into the K03XD.