I use a node 2 to stream tidal hifi into my integrated and I can toggle between the analogue and spdif out, I've tried pretty hard to distinguish a difference between the two as the amp has a decent set of Wolfson chips on board, with regard to masters, it's down to the original production / mastering, as some of them are somewhat underwhelming and others are astonishingly good to my ears such as St Germain. That said I rate the node 2 highly, given that is has pre amp capability, expandable inputs and a very decent headphone out. My cd rips on usb stick sound superb too. The clincher for me though was the native Radio Paradise, which I guess is the HD version and has never sounded better. The bluesound UI is also very good and now allows you to browse masters through the android app.