I've heard of people building LM3886 power amps and using runoffgroove amp-in-a-pedal circuits as pre-amps.  I'm thinking it would be cool to build a sans-amp GT2 circuit as the pre-amp.  So if I were to put the power amp and pre-amp into a single chassis for a guitar amp head, how would I power the preamp from the power supply?  Would I create a voltage divider from the high voltage DC line to put out the 9 volts?  I'm hoping I wouldn't need a lower voltage secondary from the power transformer.

I'm sorry if this is a stupid question.  I built a tube amp recently so I'm not a total noob, but I don't have any experience with solid state amps.