Unless I’m mistaken, once I’ve de-linked L and R input levels in Mixer 2 (for main or aux), it becomes impossible to change overall input levels while preserving stereo pan without sending two different MIDI CC messages, one for each stereo channel. This would be fine, except that Aeros has trouble dealing with clusters of MIDI messages. If I send two CCs at nearly the same time, Aeros will often ignore the second. To guarantee that Aeros responds to both, I need to separate them in time, but if I’m not muted this creates an interval during which my signal may audibly lurch from left to right or vice versa. So I am requesting a way to change both levels simultaneously via MIDI.
A simple way to do this would be to create (1) a setting to disable live updating of input levels, and (2) an ‘Update input levels’ MIDI command. When live updates are disabled, Aeros won’t respond to MIDI input gain CCs until it receives an Update command, whereupon it will adjust all input levels so that they correspond to the last input gain CCs received for all channels (aux and main, left and right).
A better but more complicated option would be to ditch separate MIDI parameters for L and R input level in favour of ‘Pan’ and ‘Level’ parameters, so that overall input level (for main or aux) can be changed with a single command independently of pan.