Custom Power Supply for 6v DC Motor


I'm trying to find a more substantial power supply to replace the wall wart that came with my Amazon Model Two. I need a 6v ac/dc converter. Anyone know a source for something like this? Or someone that could make me one? I can get a Black Lightening from Red Wine Audio but that's $1000 plus. I'd be willing to spend half that.
dhcod
Tobias, this little project will be completed by the end of March.

It is about a one single Power supply Box delivering regulated linear DC to 3 different components (DAC, TT motor. and a Phono Preamp) as per the following requirenments:

DC 12 volt, 0.75 Amp
DC 12 volt, 0.4 Amp
DC 9 volt, 1 Amp
No, the Amazon Model 2 is just a wall wart connected to the motor. There is an adjustment screw for each speed but no external controller for this model. I've spoken to a couple of owners who have found external supplies that have improved the sound. Unfortunately the companies no longer make them in the correct voltage. I'm going to take a look at the medical supplies out there.
If there are voltage swings in my AC, is a robust power supply (such as the one's offered through Acopian) likely to help my turntable's DC motor keep it's speed?