The PA800 manual suggests that you can pan all instruments to right output and microphone to the left output.

Page 94 says that you can pan all instrument tracks from full right to full left

Page 234 covers the voice processor, and says that the Pan knob adjusts panning for the Lead voice. L64 (panned fully left) to R63 (panned fully right).

good luck

Duane
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Korg PA4x76, Yamaha CP-70 Electric Grand Piano, Zoom L20 mixer/recorder, Turbosound ip500 column speaker system, Zoom B1 FOUR Bass Multi-Effects Processor