MOTM

Slight variation on my original concept: Reverse the inversion. ;-)

The "anti-crosstalk inputs" should just be more inputs. The extra OUTputs
should be "anti-crosstalk outputs," i.e. inverted.

It's better this way because multiple (non-inverted) trigger inputs would be
useful for other purposes. This may not matter much unless the extra input
jacks are on the front panel, though.

With unlimited front panel space, there'd be an inversion switch and an
attenuator for each input. So much for the ideal world.
--
john