The problem with this sort of device is that, at that price, it tends to have a 'cooking' naim amp so with its premium brand, lots of other devices will more than outcompete it at that price. Also the power output is quite modest so for lots of dynamics in music for bigger speakers like those kef r700 (which i don't really rate - not as balanced and detailed as likes of similar pro ac, pmc, spendor speakers for same money). So if you wanted to get best possible out of it, you wouldn't really pair it with big spekers like the kefs with the bigger power needed, but smaller speakers, which makes the naim less flexible.
im sure you could get a really good streamer (like the node 2) and pair it with a really good analogue amp (or one with a dac) from likes of rega, Cyrus (e.g. One) , musical fidelity and the whole system would sound better than the naim unit, at similar price. Plus a cheap cd transport and if sound quality is the main aim, but you don't like look of boxes, conceal them in some really nice furniture.
the problem with these units for me, is that whenever you see a premium brand do an all in one type thing, I'm just thinking compromise, compromise. And you pay for that compromise too. And if it's just to show it off for the sake of sound quality, which you are spending that money for in the first plac, why buy it.