The present invention is devised in view of such a problem and an object of an embodiment is to provide a vehicle power output device that can drive {HEAD ~ the first rotary electric machine} and {TAIL ~ the second rotary electric machine} in an efficient range in a wide driving region and can eliminate the need for complicated mechanism and control 
The present invention is devised in view of such a problem and an object of an embodiment is to provide a vehicle power output device that can drive { HEAD ~ the first rotary electric machine } and { TAIL ~ the second rotary electric machine } in an efficient range in a wide driving region and can eliminate the need for complicated mechanism and control
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