To the OP, IME the sonic differences are as big as anything else you choose to compare in "hi-fi".
However, maybe in absolute terms, the differences are really quite small, but to those of use that seem to have more money than sense (myself firmly included in this group I hasten to add) believe that the differences are night and day and worth paying vast chunks of money for. I'm struggling to hear that much differences between spotify 320kbs and CDA, and as you know from my DAC experience, there aint much point in spending a wad in that direction either, but I'm pretty sure I could tell my M2 from a K2 from a Cyrus of any denomination.
However, maybe in absolute terms, the differences are really quite small, but to those of use that seem to have more money than sense (myself firmly included in this group I hasten to add) believe that the differences are night and day and worth paying vast chunks of money for. I'm struggling to hear that much differences between spotify 320kbs and CDA, and as you know from my DAC experience, there aint much point in spending a wad in that direction either, but I'm pretty sure I could tell my M2 from a K2 from a Cyrus of any denomination.