Impact of phase inversion by preamp


This will be my first post on this forum so I thought I’d pose a question I’ve always wondered about.  I have a Conrad Johnson Premier 18LS preamp that I’ve been extremely happy with since first acquiring it some years ago.  This is a solid state single ended, single stage design that inverts the phase of the input signal at the output.  The manual states that you should reverse the connections to the speakers to account for this.  Obviously this is easily done but I really can’t see how it would really matter as long as things are connected consistently between the left and right channels.  I’d be interested to hear what others have to say on this subject.
ligjo
OK, so that’s one data point. If in fact the story is true. But one data point doesn’t really mean too much. Even if he was wrong. That’s not very convincing evidence. What evidence do you have that Polarity is a 50% proposition for CDs? 
What evidence do you have that Polarity is a 50% proposition for CDs?
@geoffkait What proof is there that it is anything but random?


I’m not asking for proof. I’m only asking for evidence. Got any? A whole lotta nothin’ I suspect.