If send from PC midi out to PA800 midi in, you will need an instrument definition file for your PA800
This INS file can then be loaded in your sequencer software and you can choose per track which kit or instrument you want to use.
Fred
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Keyboards/Sound Units: Kurzweil 2600S, Roland VR-760, Acces Virus C, Roland G-800, Akai AX60, Minimoog, Machine Drum, Roland R8-M, mediastation x-76