There is much controversy regarding this subject which to me indicates that there is no clear right or wrong. In this context phase refers to whether your speaker cone moves outward in response to the positive half of the input signal. Some people are sensitive to this, most are not. It's easy to test your sensitivity if your preamp or D/A offers this feature. In the recording process phase integrity is rarely maintained. In fact, from track to track on most pop/rock recordings there is no consistency. It will take a serious effort on your part to accurately label a large music collection for absolute phase. I question whether it would be worth the effort. Relative phase is far more important.
