Does the alesis micron have a mono output (i.e. left channel)? It's not labeled, but the manual does say the left input should be used for mono signals. I assume it's the same with the output, just curious.
i have been searching for the same answer as you for a day or two now and believe you are correct as that is something of a "standard" with optional stereo outputs. It's the same way (left for mono) on my Vox tonelab digiblab amp modeler.
the micron is pretty fun eh? I've nicknamed mine the Townsendator (instantly cop a 70's Who vibe and start wailing