This is a buffer with 2 outputs. One is normal and the other is reverse phase.
There is a gain control for the normal output, in case you need an "always on" neutral boost.
The pedal runs on 8-18 volts dc and must be used with a power supply, preferably a Voodoo Labs Pedal Power or Fryette Valvulator.
These are hand decorated and there may be variations in the lettering and epoxy coating.