To me, IF a recording HAS any particular phase, (many have been messed up so much you cna't tell anyway!) The easiest way I can tell is the image seems to be either a bit in front and between the speakers (correct image/phase) or BEHIND the speakers (inverted image/phase)
Beyond that.. it does not matter.. unless it screws up the imaging alltogether when badly mastered.
Beyond that.. it does not matter.. unless it screws up the imaging alltogether when badly mastered.