Rewire Marantz or Reterminate Cable

If you're balanced source to amp, you have to maintain the correct phase, but if the signal is converted to single-ended somewhere in the chain, then it doesn't matter, no?

A player modded to the "correct" polarity would be worth $50 to me if it was a high quality job. When you switch cables around enough that last thing you need is a "special" component.

What is the correct phase? I don't believe there are many if any pieces of recorded music that maintains the same phase thoughout the recording chain. And especially recordings from europe would be different.

How about just reversing the speaker cables to flip the polarity back?

Flipping speaker cables would be fine except this is one source out of three so it must be fixed at the source end.

Rwwear, while technically you may be correct for all I know, the point remains that it would be nice to have the same setup here regardless of the cable or component.

The easiest way to fix the problem in that case would be to reverse the positive and negative at one end of your XLRs.