Eldartford, given that hardly any manufacturer provides a way of inverting the signal, I hardly worry about polarity, but I know from much experience that one direction typically sounds better. Presently I lack any capability to change either digital or analog. It is real shame that there is so much disregard for correct polarity. If recording engineers were less lazy and music companies more concerned, such that we could know that all recordings had say the first oncoming sound as positive polarity, we could all just set our speaker leads one way and forget the problem. Alas, that is very unlikely. I am sure in the digital domain that software could just set every cut to onset positive polarity.