You'd lose more resolution by inserting contacts and another pair of interconnects, than you are listening to the percentage of recordings you own that were recorded out of phase. My BAT VK-D5 has a phase inversion feature. There are only a few discs that I own, that audibly benefit from reversal(Mostly; just my Cheskys). The studios that are meticulous enough to insure that all their mics and direct fed instruments are recording in phase with one another are few.
