This year I upgraded my entire system. The source used to be the same Cambridge as yours, and is now Innuos. As I've also bought new speakers, amp and DAC, plus cabling, it's impossible for me to accurately state where the improvements begin and end. Needless to say though that the SQ is 100x better.
My point is that everything between the ethernet port of your router/switch and the input of your DAC matters a hell of a lot. To state it's only 1s and 0s is to frame it in too binary a statement. You need to understand the digital signal is actually an analogue representation of a digital signal, along with noise and jitter issues.