Graph Tech Ghost - Manual (Page 48)

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The Traktion Switch optimizes the output of the Hexpander for use
with either Roland or Axon MIDI converters. Reach into the slot on
the 13-pin jack plate with a toothpick to slide this tiny switch to
match the converter you’re using. If your converter is a Yamaha or
another brand, try both positions and use the one that works best.
Traktion Switch
ROLAND AXON