BPA 200 curiousities

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I know the prefered method is use drv134 and a pair of paralleled 3886, or 4780's. Also there is the app note one using servo in feedback loop. Yet other appeared to have tried without servo and menion of success using .5ohm 'ballast' resistors.

Just curious, what would be troubles encountered to parallel 2 bridge circuits? That is, have a bridge config using 2 3886's and parallel that with maybe .3 ohm or something....? Well, I guess that would be the basic circuit describing bpa200 in the app note pdf.

Just would be nice to avoid extra circuitry (quickie regulator circuit 7815/7915 and drv134. Thinking about building one with balanced jacks. Hmmm, what would happen if - pin tied to ground killing lower half of circuit, back to 100-140wpc like 4780/2x3886?....
 
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