Colorsound Power Boost is this the same as the Overdriver?

[vanessa]

Is the Colorsound Power Boost the same as the Colorsound Overdriver? I can't seem to find a schematic for the Power Boost, does someone have one?

[brian wenz]

Hello Hello--

   Yeah, same circuit.  The power booster had a master volume on it [I think....]     The circuit REALLY needs a master volume to tame it down a little.
Brian.