I have been considering a while on how the sound go with digital pre-amp ( control via DSP input via knob volume or the app) I will test the digital pre-amp mode on CXN V2 when i have the M700.
After couple investigation , I think the sound from CXN directly to power amp will be (slight) better since the digital signal come directly in shortest way without going to analogue preamp, there should be less noise and artifact added during processing through many layers in traditional processing. Cambridge claims that they don’t do like other brands with digital pre-amp by striping down the bits, Cambridge does the volume control at DSP level, then no bit stripped down, and it should be better sound quality since signal goes in shortest path. I have not experienced myself yet , But this is just a logic to open for discussion.
My music is just digital (flac, waw, dsf, dsd native) format source, they are 100% digital, I rarely hear CD, or vinyl because they are not so…convenience with daily use. Moreover I hate ton of remotes on the desk and control the thing separately. music on your finger (with the mobile app) is the choice to me.