This is an update of my output comparison.
The biggest difference is TCR low vs high impedance. I prefer how low impedance is noticeably less constricted.
I noticed no material difference between XLR SE and balanced [EDIT: upon further listening, XLR SE has more detail in the treble region in a favorable way].
TCR low impedance, high vs low gain is the most interesting comparison. Low gain is more dense but laid back, whereas high gain has more air and a more forward presentation. I’ve pivoted and find myself preferring high gain recently.
XLR compared to TCR low impedance high gain, is somewhat richer and more dynamic with a taller vertical soundstage. It’s quite impressive but TBD if more quickly fatiguing.
The difference in profile between the various outputs, output rolling if you will, makes the amp even more appealing and customizable for those tweakers/rollers. I hope my ears aren’t broken, but this is what I hear on August 10th.