Datasheets for various differential-input audio amps show single-ended inputs as having the input to IN- and with the IN+ AC-coupled to ground. Why is this, vs. having IN+ receive the input and IN- being grounded? I understand that this would result in a phase shift at the speaker for one choice vs. the other, but for most applications this wouldn't matter, would it? Is the above just a convention, or is there some technical reason for choosing IN- for the signal input?
Thanks,
Scott
