Hi Donny

Yes I've been using the harmony M before I got hold of the korg iH

The Harmony M is set to recieve on Midi Channel 1 from the factory.

In the midi out setting on both the KMA and the Pa500 you need to change the Channel 1 setting to Chord this is the last setting in the list. This enables the korg to send midi info even when the lower voice is muted which is quite often dependent on style.

The KMA :

Press the Global Button, using page +/- buttons move to page 10
the midi channel out page and change the setting on channel 1 to 'chord' the press the write button and save the global setting. Page 129 in the manual.

I'm not exactly sure about the Pa500 but the Pa2x is the same setting just a different way to access it. (touch screen)

If you need any more help give me a bell on skype I'll stay on line just in case.

Regards

Col