FINAL MIX TESTING

Hi all. Does anyone have a tried, true and accurate way of checking out a final mixes sound compatibility in the real world without having to resort to playing on a myriad of different players like a car, desktop speakers, ipods, ipads, home stereos etc?? What I was thinking of is a program that will load the audio file and show a pass/fail graph for each of the above players. I know something like this sounds too unrealistic and fantasy like but I also know the best way is testing on different players ---but--- how do the pros do it? I can't imagine they play the mixes out to all different media players.... I have heard of a K meter...is this going in the right direction? Thanks, Steve