Based on feedback from the HCFX Forum, I've reworked the DD-6 style Hold mode firmware to allow for shorter loop grabs. I've also eliminated the overdubbing feature.
This is a short demo illustrating the capabilities of the Line 6 M9 looper when controlled by an external MIDI source. Please see my previous video ( http://www.youtube.com/watch?v=yIDUUE_cfas ) for a more lengthy discussion of the DD-6 Hold mode.